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1.
Pathogens ; 13(8)2024 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-39204297

RESUMEN

Sub-Saharan Africa, with its hot and humid climate, is a conducive zone for tick proliferation. These vectors pose a major challenge to both animal and human health in the region. However, despite the relevance of emerging diseases and evidence of tick-borne disease emergence, very few studies have been dedicated to investigating zoonotic pathogens transmitted by ticks in this area. To raise awareness of the risks of tick-borne zoonotic diseases in sub-Saharan Africa, and to define a direction for future research, this systematic review considers the trends of research on tick-borne bacteria, parasites, and viruses from 2012 to 2023, aiming to highlight the circulation of these pathogens in ticks, cattle, sheep, goats, and humans. For this purpose, three international databases were screened to select 159 papers fitting designed inclusion criteria and used for qualitative analyses. Analysis of these studies revealed a high diversity of tick-borne pathogens in sub-Saharan Africa, with a total of 37 bacterial species, 27 parasite species, and 14 viruses identified. Among these, 27% were zoonotic pathogens, yet only 11 studies investigated their presence in humans. Furthermore, there is growing interest in the investigation of bacteria and parasites in both ticks and ruminants. However, research into viruses is limited and has only received notable interest from 2021 onwards. While studies on the detection of bacteria, including those of medical interest, have focused on ticks, little consideration has been given to these vectors in studies of parasites circulation. Regarding the limited focus on zoonotic pathogens transmitted by ticks, particularly in humans, despite documented cases of emerging zoonoses and the notable 27% proportion reported, further efforts should be made to fill these gaps. Future studies should prioritize the investigation of zoonotic pathogens, especially viruses, which represent the primary emerging threats, by adopting a One Health approach. This will enhance the understanding of their circulation and impact on both human and animal health. In addition, more attention should be given to the risk factors/drivers associated to their emergence as well as the perception of the population at risk of infection from these zoonotic pathogens.

2.
J Food Prot ; 87(10): 100351, 2024 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-39187132

RESUMEN

Diarrheal disease is a leading cause of death in children in low- and moderate-income countries. Fresh produce, including fruits and vegetables, may harbor diarrheal disease-causing bacteria including strains of Salmonella enterica and Escherichia coli. This study aimed to determine the prevalence and antibiotic resistance profiles of S. enterica and E. coli isolated from produce samples (n = 207) obtained from retail markets in northern Botswana in Chobe District of Botswana in 2022. Samples were enriched in the appropriate selective media: Brilliant Green Bile Broth for E. coli and Rappaport Vassiliadis Broth for S. enterica. E. coli were confirmed by PCR detecting the phoA gene, and classified as potentially pathogenic through screening for the eae, stx, and stx2 and estIb genes. S. enterica isolates were confirmed using invA primers. Isolates were evaluated for resistance to ampicillin, amoxicillin-clavulanic acid, chloramphenicol, cefotaxime, doxycycline, streptomycin, sulfamethoxazole, and tetracycline antibiotic using the Kirby-Bauer Disk Diffusion method. E. coli was isolated from 15.5% of produce samples (n = 207). The gene eae was detected from 1.5% of samples, while stx1, stx2, and estIb were not detected. Resistance to one or more antibiotics was common (72%) with the majority of the resistant E. coli (n = 32) isolated from fruits (22%) and greens (18%) compared to other types of vegetables. Multidrug resistance (MDR, resistant to 3 or more antibiotics) was identified in 18% of samples. S. enterica was isolated from 3.4% of produce samples (7, n = 207). Resistance was uncommon among the S. enterica isolates (1/7). Overall prevalence of diarrheagenic S. enterica and E. coli was low; however, their presence and that of MDR E. coli in foods commonly consumed raw increases the risk to vulnerable populations. Strategies to reduce contamination of fresh produce and public education on washing and cooking some types of produce may be useful to reduce disease.

3.
Cureus ; 16(6): e61841, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38975490

RESUMEN

Ensuring access to proper eye health services is not only a fundamental human right but also crucial for preserving an individual's quality of life, preventing blindness, and promoting overall well-being. This is especially true in low-income countries like Sub-Saharan Africa (SSA) where recognizing the intricate relationship between access to healthcare and social determinants of health (SDOH ) is crucial to addressing health disparities. The goal of this study was to elucidate and highlight not only the barriers millions face in obtaining eye care but also pave the way for interventions and policies aimed at creating equitable access across diverse populations. To do this, a scoping review was conducted across the Cumulated Index to Nursing and Allied Health Literature (CINAHL), Embase, and PubMed databases for studies meeting the search terms and inclusion criteria. The results show that intervention strategies that increase vision care must extend beyond the healthcare sector to address the multifaceted challenges. Collaborating with stakeholders involved in addressing broader livelihood issues, such as food security, education, and SDOH, becomes imperative to ensure comprehensive and sustainable improvements in vision care accessibility in SSA.

4.
Pest Manag Sci ; 80(9): 4156-4162, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38843468

RESUMEN

Despite major breeding efforts by various national and international agencies, yields for the ~40 million hectares of maize, the major food crop in sub-Saharan Africa, have stagnated at <2 tons/ha/year for the past decade, one-third the global average. Breeders have succeeded in breeding increased yield with a modicum of tolerance to some single-weed or pathogen stresses. There has been minimal adoption of these varieties because introgressing polygenic yield and tolerance traits into locally adapted material is very challenging. Multiple traits to deal with pests (weeds, pathogens, and insects) are needed for farmer acceptance, because African fields typically encounter multiple pest constraints. Also, maize has no inherent resistance to some of these pest constraints, rendering them intractable to traditional breeding. The proposed solution is to simultaneously engineer multiple traits into one genetic locus. The dominantly inherited multi-pest resistance trait single locus can be bred simply into locally adapted, elite high-yielding material, and would be valuable for farmers, vastly increasing maize yields, and allowing for more than regional maize sufficiency. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Asunto(s)
Plantas Modificadas Genéticamente , Zea mays , Zea mays/genética , Plantas Modificadas Genéticamente/genética , África del Sur del Sahara , Animales , Enfermedades de las Plantas/parasitología , Insectos/genética , Insectos/fisiología , Malezas/genética , Control de Malezas/métodos , Productos Agrícolas/genética
5.
Curr HIV/AIDS Rep ; 21(4): 220-236, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38814361

RESUMEN

PURPOSE OF REVIEW: Expanding access to HIV testing services and linking newly diagnosed positive adolescents to antiretroviral therapy is critical to epidemic control. However, testing coverage and treatment initiation rates continue to lag behind adult counterparts. This article synthesizes evidence on facilitative policies and service delivery practices focused on adolescents to inform programming. RECENT FINDINGS: Our narrative review found that national policies are growing more adolescent-inclusive but barriers around the age of consent, waiver frameworks and dissemination constrain translate into practice. Facility-based provider-initiated testing through integrated sexual health services and dedicated youth centres demonstrates uptake effectiveness if confidentiality and youth-friendly adaptations are assured. Supportive policies, youth-responsive adaptations across testing models and strengthening age-disaggregated monitoring are vital to improving adolescents' engagement across the HIV testing and treatment cascade. Further implementation research is imperative to expand the reach of adolescent HIV testing in sub-Saharan Africa.


Asunto(s)
Infecciones por VIH , Prueba de VIH , Accesibilidad a los Servicios de Salud , Humanos , Adolescente , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Prueba de VIH/métodos , Prueba de VIH/estadística & datos numéricos , África del Sur del Sahara/epidemiología , Política de Salud , Tamizaje Masivo , Aceptación de la Atención de Salud/estadística & datos numéricos
6.
Front Public Health ; 12: 1375221, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38803813

RESUMEN

Introduction: Non-communicable diseases (NCDs), the leading cause of death globally, are estimated to overtake communicable diseases in sub-Sahara Africa, where healthcare workers (HCWs) play a crucial role in prevention and treatment, but are in extreme shortage, thereby increasing the burden of NCDs among this specific population. To provide evidence for policy-making, we assessed the NCD burden, associated factors and treatment among HCWs in four sub-Saharan African countries. Materials and methods: We conducted a cross-sectional study across four sub-Saharan African countries [Côte d'Ivoire (CIV), Democratic Republic of the Congo (DRC), Madagascar (MDG), and Nigeria (NIG)] between February and December 2022. In a standardized questionnaire, sociodemographic, chronic disease and treatment data were self-reported. We estimated the prevalence of (1) at least one chronic disease, (2) hypertension, and used backward elimination logistic regression model to identify risk factors. Results: We recruited a total of 6,848 HCWs. The prevalence of at least one chronic disease ranged between 9.7% in NIG and 20.6% in MDG, the prevalence of hypertension between 5.4% in CIV and 11.3% in MDG. At most, reported treatment rates reached 36.5%. The odds of each of both outcomes increased with age (at least one chronic disease adjusted odds ratio: CIV: 1.04; DRC: 1.09; MDG: 1.06; NIG: 1.10; hypertension: CIV: 1.10; DRC: 1.31; MDG: 1.11; NIG: 1.11) and with BMI (at least one chronic disease: CIV: 1.10; DRC: 1.07; MDG: 1.06; NIG: 1.08; hypertension: CIV: 1.10; DRC: 1.66; MDG: 1.13; NIG: 1.07). Odds of both outcomes were lower among males, except in CIV. In NIG, the odds of both outcomes were higher among medical doctors and odds of hypertension were higher among those working in secondary care. In MDG, working in secondary care increased and working as auxiliary staff decreased the odds of at least one chronic disease. Conclusion: The prevalence of self-reported chronic disease varied across the four sub-Saharan countries with potentially very low treatment rates. We identified several individual (age, sex, and BMI) and occupational (profession, level of healthcare) factors that influence the odds of NCDs. These factors should be taken into account when developing interventions addressing the burden and management of NCDs among HCWs.


Asunto(s)
Personal de Salud , Enfermedades no Transmisibles , Humanos , Estudios Transversales , Masculino , Enfermedades no Transmisibles/epidemiología , Femenino , Adulto , Personal de Salud/estadística & datos numéricos , Persona de Mediana Edad , África del Sur del Sahara/epidemiología , Prevalencia , Factores de Riesgo , Hipertensión/epidemiología , Encuestas y Cuestionarios , Enfermedad Crónica/epidemiología , Costo de Enfermedad , Côte d'Ivoire/epidemiología
7.
Contracept Reprod Med ; 9(1): 16, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38622719

RESUMEN

BACKGROUND: Improving women's access to and use of modern contraceptives is a key global strategy for improving the sexual and reproductive health of women. However, the use of modern contraceptives among adolescent girls and young women in sub-Saharan Africa (SSA) remains relatively low, despite the numerous interventions to increase patronage. This study examined adolescent girls and young women's receipt of quality contraceptive counselling and its associated factors in SSA. METHODS: Data for the study were extracted from the recent Demographic and Health Surveys of 20 countries in SSA, spanning from 2015 to 2021. A sample of 19,398 adolescent girls and young women aged 15 to 24 years was included in the study. We presented the proportion of adolescent girls and young women who received quality contraceptive counselling using a spatial map. Multilevel binary logistic regression analysis was carried out to examine the factors associated with the receipt of quality contraceptive counselling. RESULTS: Overall, 33.2% of adolescent girls and young women had access to quality contraceptive counselling, ranging from 13.0% in Cameroon to 67.0% in Sierra Leone. The odds of receiving quality contraceptive counselling was higher among adolescent girls and young women aged 20-24 (AOR = 1.48, CI: 1.32-1.67), those with primary (AOR = 1.32, CI: 1.11-1.57) and secondary or higher education (AOR = 1.31, CI: 1.09-1.58), and those married (AOR = 1.32, CI: 1.15-1.52), cohabiting (AOR = 1.47, CI: 1.23-1.76), and previously married (AOR = 1.48, CI: 1.20-1.83) compared to their counterparts in the reference groups. Adolescent girls and young women who were currently working (AOR = 1.22, CI: 1.09-1.37), those who heard of family planning from radio in the last few months (AOR = 1.34, CI:1.21-1.50), those who visited the health facility in the last 12 months (AOR = 1.69, CI: 1.52-1.88), and those residing in the Southern (AOR = 5.01, CI: 3.86-6.51), Eastern (AOR = 2.54, CI: 1.96-3.30), and Western (AOR = 4.09, CI: 3.19-5.25) SSA were more likely to receive quality contraceptive counselling compared to their counterparts in the reference groups. Conversely, adolescent girls and young women who used the internet, those who had problem getting permission to seek medical help, those facing problem in seeking medical help for not wanting to go alone, those from the middle and richest wealth indices, and those from the rural areas were less likely to receive quality contraceptive counselling compared to their counterparts in the reference groups. CONCLUSION: Receipt of quality contraceptive counselling among adolescent girls and young women was low. Considering the importance of quality contraceptive counselling on the uptake and continuation of contraception, policymakers need to institute measures that improve adolescent girls and young women's access to quality contraceptive counselling in SSA, especially in countries like Cameroon, Angola, Madagascar, Mauritania, and Guinea, taking into consideration the factors identified in the study. Increasing adolescent girls and young women's access to quality contraceptive counselling could greatly minimize the risk of unintended pregnancies and its associated maternal and child health burden in SSA and subsequently contribute to the attainment of the Sustainable Development Goal 3, target 3.7.

8.
Front Physiol ; 15: 1383996, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38449782

RESUMEN

[This corrects the article DOI: 10.3389/fphys.2023.1049994.].

9.
BMC Public Health ; 24(1): 910, 2024 Mar 27.
Artículo en Inglés | MEDLINE | ID: mdl-38539158

RESUMEN

BACKGROUND: HIV/AIDS is one of the top global public health threats that causes significant cases, deaths, and socioeconomic impact. Even though both HIV testing and counseling are identified as essential HIV interventions during pregnancy, large population-representative data shows that service coverage and determinants are limited. Therefore, this study aimed to assess the coverage and determinants of HIV testing and counseling services among pregnant mothers attending antenatal care services in sub-Saharan African countries using different nationwide data. METHODS: This study was conducted on large national-representative data from the Demographic Health Survey (DHS) using multilevel analysis. Data extraction, cleaning, coding, and statistical analysis were performed using STATA version 17. Weighting was used to ensure the representativeness of the sample and to obtain reliable estimates and standard errors. The multivariable multilevel logistic regression model was used to identify the determinants of HIV testing and counseling during the antenatal care visit. Adjusted odds ratios with 95% confidence intervals were used to measure statistical significance. RESULTS: A total of 83,584 women attending antenatal care were included in this study. HIV testing and counseling coverage in sub-Saharan Africa was found to be 62.87% with a 95% CI of 62.54-63.19%. The HIV testing and counseling determinants included being in the age group of 35-49 (AOR = 1.64; 95% CI: 1.46-1.83), secondary and above education levels (AOR = 1.50; 95% CI: 1.39-1.60), having at least four ANC visits (AOR = 1.85; 95% CI: 1.68-2.02), living in an urban area (AOR = 1.40; 95% CI: 1.30-1.52), and living in countries such as Rwanda (AOR = 6.19; 95% CI: 5.19-7.38) and Mauritania (AOR = 0.02; 95% CI: 0.01-0.03). CONCLUSION: This study revealed that HIV testing and counseling coverage was 62.87% in sub-Saharan Africa. Factors affecting the HIV testing and counseling coverage were age, education, frequency of antenatal care visits, residence area, and living in Rwanda and Mauritania. Therefore, to increase HIV testing and counseling coverage in sub-Saharan Africa, policymakers on maternal health and other stakeholders should work with an integrated approach with other sectors and give prior attention to modifiable factors such as promoting women's education and the comprehensiveness of antenatal care follow-up services during the follow-up.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida , Atención Prenatal , Femenino , Embarazo , Humanos , Adulto , Persona de Mediana Edad , Análisis Multinivel , Encuestas Epidemiológicas , África del Sur del Sahara , Consejo , Prueba de VIH
10.
Front Public Health ; 12: 1325029, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38496393

RESUMEN

Introduction: Pre-exposure Prophylaxis (PrEP) is a daily pill aimed at reducing HIV transmission risk when taken as prescribed. It's highly recommended for high-risk Men who have sex with Men (MSM). This study aimed to assess PrEP awareness and willingness to use it among Rwandan MSM, a critical aspect given PrEP's proven effectiveness. The findings are expected to inform policy decisions and further advance the implementation of PrEP strategies. Methods: This is a cross-sectional study design that utilized a web-based survey conducted between April and June 2019 to assess awareness and willingness to use PrEP among sexually active MSM in Rwanda. A snowball sampling technique was used to recruit participants via social media such as WhatsApp and e-mail. Eligibility criteria included being sexually active, aged ≥18 years, self-identifying as MSM, residing in Rwanda, self-reported engagement in receptive or insertive anal sex in the last 12 months, and self-reported HIV-negative serostatus. We assessed two primary outcomes: PrEP awareness (having ever heard of PrEP) and willingness to use PrEP within one month of completing the survey. Multivariable logistic regression was performed to identify participant characteristics associated with PrEP awareness and willingness to use it. Results: Out of 521 participants, the majority (73%) demonstrated awareness of PrEP. Factors linked to PrEP awareness included residing outside the capital, Kigali, being in the 18-29 age group, having higher education levels, perceiving a benefit from PrEP, and engaging in vaginal sex with a woman while using a condom in the last year. Additionally, 96% of participants expressed a strong willingness to use PrEP. Conclusion: Rwandan MSM exhibits a high level of PrEP awareness, notably associated with factors like location, age, education, perceived benefits, and condom use. The study also revealed a strong willingness to use PrEP, indicating promising prospects for its adoption among this group. These findings highlight the need for targeted awareness campaigns, personalized interventions, and comprehensive sexual health education to promote PrEP adoption and strengthen HIV prevention efforts among Rwandan MSM.


Asunto(s)
Infecciones por VIH , Profilaxis Pre-Exposición , Minorías Sexuales y de Género , Masculino , Femenino , Humanos , Adolescente , Adulto , Homosexualidad Masculina , Rwanda , Infecciones por VIH/prevención & control , Infecciones por VIH/tratamiento farmacológico , Estudios Transversales , Internet
11.
J Pediatr Surg ; 59(5): 1009-1014, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38184433

RESUMEN

BACKGROUND: Wilms' tumor (WT) is the most common paediatric renal tumor and is one of the most treatment-responsive solid tumours. Survival from Wilms tumour (WT) in sub-Saharan Africa remains dismal as a result of late presentation, treatment abandonment and infrastructure deficit. The purpose of this study was to analyze the clinical outcome of children with Wilms tumour managed in a Nigerian referral centre over a 15-year period. METHODS: This is a retrospective study of children with WT (nephroblastoma) who were treated at our institution between January 2006 and December 2020. Clinical characteristics, treatments, and outcomes were analyzed. RESULTS: Thirty-five patients were identified. The median age at diagnosis was 36 months including 22 (62.9 %) females. Twenty-six (74.3 %) had advanced (stage III & IV) disease. Confirmatory histology was available for 16 patients ((45.7 %) among which 10 (62.5 %) were mixed type. The right kidney was affected in 18 patients (51.4 %), left in 15 (42.9 %) and 2 were not documented. Preoperative chemotherapy was given in 22 (62.9 %) patients and 13 (37.1) patients had primary nephrectomy. Eight (22.9 %) patients died during treatment (from disease or treatment related causes), and one abandoned treatment. A total of 26 patients completed treatment. Out of these, 8 (30.8 %) were lost to follow up, four patients died and 14 (53.8 %) patients survived at a median follow-up period of 18 months. The survival decreased with advancing stages of the disease, p = 0.002. CONCLUSIONS: Majority of children with Wilms tumour in our practice presented with advanced disease. Death during treatment, treatment abandonment and lost to follow up were common. LEVEL OF EVIDENCE: Level II. TYPE OF STUDY: Retrospective Study.


Asunto(s)
Neoplasias Renales , Tumor de Wilms , Niño , Femenino , Humanos , Lactante , Preescolar , Masculino , Estudios Retrospectivos , Nigeria/epidemiología , Tumor de Wilms/patología , Neoplasias Renales/patología , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Resultado del Tratamiento
12.
J Hepatol ; 80(2): 243-250, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37898348

RESUMEN

BACKGROUND & AIMS: Sub-Saharan African (SSA) ethnicity has been associated with a higher risk of hepatocellular carcinoma (HCC) among individuals with chronic hepatitis B in cross-sectional studies. However, the incidence of HCC and performance of HCC risk scores in this population are unknown. METHODS: We conducted an international multicenter retrospective cohort study of all consecutive HBV-monoinfected individuals of SSA or Afro-Surinamese (AS) ethnicity managed at sites in the Netherlands, the United Kingdom and Spain. We assessed the 5- and 10-year cumulative incidences of HCC in the overall study population, among different clinically relevant subgroups and across (m)PAGE-B subgroups. Next, we explored the different risk factors for HCC. RESULTS: During a median follow-up of 8 years, we analyzed 1,473 individuals of whom 34 developed HCC. The 5- and 10-year cumulative incidences of HCC were 1% and 2.4%. The 10-year cumulative incidence of HCC was 0.7% among individuals without advanced fibrosis at baseline, compared to 12.1% among individuals with advanced fibrosis (p <0.001). Higher age (adjusted hazard ratio [aHR] 1.05), lower platelet count (aHR 0.98), lower albumin level (aHR 0.90) and higher HBV DNA log10 (aHR 1.21) were significantly associated with HCC development. The 10-year cumulative incidence of HCC was 0.5% among individuals with a low PAGE-B score, compared to 2.9% in the intermediate- and 15.9% in the high-risk groups (p <0.001). CONCLUSIONS: In this unique international multicenter cohort of SSA and AS individuals with chronic hepatitis B, we observed 5- and 10-year cumulative HCC risks of 1% and 2.4%, respectively. The risk of HCC was negligible for individuals without advanced fibrosis at baseline, and among individuals with low baseline (m)PAGE-B scores. These findings can be used to guide HCC surveillance strategies. IMPACT AND IMPLICATIONS: Sub-Saharan African ethnicity has been associated with a higher risk of hepatocellular carcinoma among individuals with chronic hepatitis B. In this international multicenter cohort study of sub-Saharan African and Afro-Surinamese individuals living with chronic hepatitis B in Europe, we observed 5- and 10-year cumulative incidences of hepatocellular carcinoma of 1% and 2.4%, respectively. The risk was negligible among individuals without advanced fibrosis and a low baseline (m)PAGE-B score. These findings can be used to guide HCC surveillance strategies in this population.


Asunto(s)
Carcinoma Hepatocelular , Hepatitis B Crónica , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/etiología , Carcinoma Hepatocelular/tratamiento farmacológico , Hepatitis B Crónica/complicaciones , Hepatitis B Crónica/epidemiología , Hepatitis B Crónica/tratamiento farmacológico , Neoplasias Hepáticas/epidemiología , Neoplasias Hepáticas/etiología , Neoplasias Hepáticas/tratamiento farmacológico , Estudios de Cohortes , Estudios Retrospectivos , Estudios Transversales , Antivirales/uso terapéutico , Factores de Riesgo , Europa (Continente) , Fibrosis , África del Sur del Sahara/epidemiología , Virus de la Hepatitis B/genética
13.
Front Clin Diabetes Healthc ; 4: 1241882, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38076524

RESUMEN

Introduction: Diabetes is a significant problem in sub-Saharan Africa and achieving glycaemic control poses a health challenge among patients living with type 2 diabetes. There are limited data on glycaemic control in Kinshasa, Democratic Republic of the Congo. This study assessed the prevalence and factors associated with glycaemic control to inform potential interventions to improve glycaemic control in Kinshasa. Methods: This was a cross-sectional study conducted between November 2021-September 2022 among patients recruited from 20 randomly selected health facilities in Kinshasa. Participants were asked to complete a structured questionnaire and to provide two millilitres of blood for Hb1AC assay. Poor glycaemic control was defined as HbA1c ≥7%. Univariate and multivariable logistic regressions were performed to identify factors associated with poor glycaemic control. Results: A total of 620 participants were recruited for this study. Study participants had a median age of 60 (IQR=53.5-69) years with the majority being female (66.1%), unemployed (67.8%), having income below the poverty line (76.4%), and without health insurance (92.1%). About two-thirds of the participants (420; 67.6%) had poor glycaemic control. Participants on monotherapy with insulin (AOR=1.64, 95%CI [1.10-2.45]) and those on a treatment duration ≥7 years (AOR=1.45, 95%CI [1.01-2.08]) were associated with increased odds of poor glycaemic control while being overweight (AOR= 0.47, 95%CI [0.26-0.85]) and those with uncontrolled blood pressure (AOR=0.65, 95% CI [0.48-0.90]) were protective for poor glycaemic control. Conclusion: Poor glycaemic control is prevalent among patients with type 2 diabetes in Kinshasa, DRC. Being on insulin alone and a duration of diabetes treatment equal or more than 7 years predisposed to poor glycaemic control. By contrary, having uncontrolled blood pressure and being overweight had protective effect against poor glycaemic control. These links between uncontrolled blood pressure and overweight on the one hand, and glycaemic control on the other are unusual. These reflect, among other things, the specific characteristics of diabetes in sub Saharan Africa.

14.
PeerJ ; 11: e16519, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38099304

RESUMEN

Malaria remains a global public health challenge. The disease has a great impact in sub-Saharan Africa among children under five years of age and pregnant women. Malaria control programs targeting the parasite and mosquitoes vectors with combinational therapy and insecticide-treated bednets are becoming obsolete due to the phenomenon of resistance, which is a challenge for reducing morbidity and mortality. Malaria vaccines would be effective alternative to the problem of parasite and insecticide resistance, but focal reports of polymorphisms in malaria candidate antigens have made it difficult to design an effective malaria vaccine. Therefore, studies geared towards elucidating the polymorphic pattern and how genes targeted for vaccine design evolve are imperative. We have carried out molecular and genetic analysis of two genes encoding vaccine candidates-the Plasmodium falciparum cell traversal ookinetes and sporozoites (Pfceltos) and P. falciparum reticulocyte binding protein 5 (Pfrh5) in parasite isolates from malaria-infected children in Ibadan, Nigeria to evaluate their genetic diversity, relatedness and pattern of molecular evolution. Pfceltos and Pfrh5 genes were amplified from P. falciparum positive samples. Amplified fragments were purified and sequenced using the chain termination method. Post-sequence edit of fragments and application of various population genetic analyses was done. We observed a higher number of segregating sites and haplotypes in the Pfceltos than in Pfrh5 gene, the former also presenting higher haplotype (0.942) and nucleotide diversity (θ = 0.01219 and π = 0.01148). In contrast, a lower haplotype (0.426) and nucleotide diversity (θ = 0.00125; π = 0.00095) was observed in the Pfrh5 gene. Neutrality tests do not show deviation from neutral expectations for Pfceltos, with the circulation of multiple low frequency haplotypes (Tajima's D = -0.21637; Fu and Li's D = -0.08164; Fu and Li's F = -0.14051). Strong linkage disequilibrium was observed between variable sites, in each of the genes studied. We postulate that the high diversity and circulation of multiple haplotypes has the potential of making a Pfceltos-subunit vaccine ineffective, while the low genetic diversity of Pfrh5 gene substantiates its evolutionary conservation and potential as a malaria vaccine candidate.


Asunto(s)
Vacunas contra la Malaria , Malaria Falciparum , Malaria , Embarazo , Niño , Animales , Humanos , Femenino , Preescolar , Plasmodium falciparum/genética , Haplotipos , Esporozoítos , Vacunas contra la Malaria/genética , Nigeria , Proteínas Protozoarias/genética , Malaria Falciparum/prevención & control , Malaria/prevención & control , Antígenos de Protozoos/genética , Nucleótidos
15.
medRxiv ; 2023 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-37961327

RESUMEN

Introduction: Pre-exposure Prophylaxis (PrEP) is a daily pill intended to reduce the risk of acquiring Human Immunodeficiency Virus (HIV) when taken as prescribed. It is strongly recommended for Men who have sex with Men (MSM) at high risk of HIV transmission to minimize infection risk. Despite its proven effectiveness, there is a lack of information about awareness and willingness to use PrEP among Rwandan MSM. In the context of HIV acquisition, the purpose of this study was to ascertain the awareness and willingness to use PrEP among high-risk Rwandan MSM. The findings of this research will provide valuable perspectives to mold policy and direct the effective execution of PrEP within the country. Method: This is a cross-sectional study design that utilized a web-based survey conducted between April and June 2019 to assess awareness and willingness to use PrEP among sexually active MSM in Rwanda. A snowball sampling technique was used to recruit participants who were contacted via social medial such as WhatsApp and e-mail. To be eligible, participants were supposed to be sexually active, aged ≥18 years, self-identify as MSM, residence in Rwanda, self-reported engagement in receptive or insertive anal sex in the last 12 months, and self-reported HIV-negative sero-status. We assessed two primary outcomes: PrEP awareness (having ever heard of PrEP) and willingness to use PrEP within one month of completing the survey. Multivariable logistic regression was performed to identify participant characteristics associated with PrEP awareness and willingness to use it. Results: Among the 521 participants included in the analysis, 63% were aged below 24 years. The majority (73%) demonstrated awareness of PrEP. Factors associated with PrEP awareness included residing outside of the capital, Kigali, as opposed to living in Kigali (adjusted odds ratio [aOR] 2.35, 95% confidence interval [CI] 1.40-3.97), being in the age groups 18-24 years (aOR 2.28, 95% CI: 1.03-5.01) or 25-29 years (aOR 3.06, 95% CI 1.35-6.93) compared to those aged 30 or older, having higher education levels, such as completing secondary education (aOR 1.76, 95% CI 1.01-3.06) or university education (aOR 2.65, 95% CI 1.18-5.96) in contrast to having no education. Lastly, perceiving a benefit from PrEP (aOR 9.52, 95% CI 4.27-21.22), and engaging in vaginal sex with a woman using a condom in the last 12 months (aOR 1.82, 95% CI 1.14-2.91) versus not. Impressively, 96% of participants expressed a strong willingness to use PrEP. Conclusion: Among Rwandan MSM, there is a high level of awareness of PrEP, notably associated with factors such as residing outside Kigali, younger age, higher education, perceived benefits of PrEP and condom use during vaginal sex in the past year. Furthermore, a significant portion of participants demonstrated an intense desire to use PrEP, suggesting promising possibilities for its extensive implementation among this group of people. The findings from this study emphasize the importance of implementing highly focused awareness campaigns, personalized intervention, and comprehensive sexual health education programs in order to enhance the adoption of PrEP and bolster HIV prevention initiatives among the Rwandan population of MSM.

16.
J Public Health Res ; 12(4): 22799036231204330, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37822993

RESUMEN

In sub-Saharan Africa, there are different studies on contraceptive use and associated factors among people with disabilities. However, the findings are inconsistent and inconclusive. This study aimed to estimate the pooled prevalence of contraceptive use and associated factors among women with disabilities in sub-Saharan Africa. Comprehensive search was performed from different databases. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis guideline was followed to report the results. The data were analyzed by using STATA software. Heterogeneity and publication bias was checked. The pooled odds ratio (POR) with a 95% confidence interval (CI) was used to report the measures of associations. The pooled prevalence of contraceptive use was 25.61% (95% CI: 20.68, 30.54). Being married (POR = 2.96; 95% CI: 1.31, 4.62), high income (POR = 2.20; 95% CI: 1.42, 2.97), having media access (POR = 1.74; 95% CI: 1.24, 2.23), being in the age group of 25-34 (POR = 2.52; 95% CI: 1.01, 3.94), vision impairment (POR = 3.82; 95% CI: 2.05, 5.59), good contraceptive knowledge (POR = 2.09; 95% CI: 1.27, 2.91), primary education (POR = 1.82; 95% CI: 1.25, 2.39), secondary education (POR = 2.31; 95% CI: 1.03, 3.59) and tertiary educational status (POR = 3.37; 95% CI: 1.28, 5.46) were factors associated with contraceptive use. Contraceptive use among women with disabilities is considerably low in sub-Saharan Africa. The use of contraceptives is primarily dependent on socio-demographic and economic status.

17.
Reprod Health ; 20(1): 129, 2023 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-37649040

RESUMEN

BACKGROUND: Unplanned pregnancy continues to be a major public health concern in Sub-Saharan Africa (SSA). Understanding the ovulatory cycle can help women avoid unplanned pregnancy. Though a wide range of factors for ovulatory cycle knowledge in SSA countries has not been well assessed, the influence of health insurance on ovulatory cycle knowledge is largely unknown. As a result, we set out to investigate the relationship between health insurance enrollment and knowledge of the ovulatory cycle among women of childbearing age. This study aims to investigate the relationship between health insurance enrollment and knowledge of the ovulatory cycle among women of childbearing age in sub-Saharan Africa (SSA). METHODS: Demographic and Health Surveys (DHSs) data from 29 SSA countries were analyzed. The association between health insurance and ovulatory cycle knowledge was investigated using bivariate and multivariate multilevel logistic regression models among 372,692 women of reproductive age (15-49). The findings were presented as adjusted odds ratios (AOR) with 95% confidence intervals (CI). A p-value of 0.05 was considered statistically significant. RESULTS: The pooled result shows that the prevalence of knowledge of ovulatory cycle in the studied 29 SSA countries was 25.5% (95% CI; 24.4%-26.6%). Findings suggest higher odds of ovulatory cycle knowledge among women covered by health insurance (AOR = 1.27, 95% CI; 1.02-1.57), with higher education (higher-AOR = 2.83, 95% CI; 1.95-4.09), from the richest wealth quintile (richest-AOR = 1.39, 95% CI; 1.04-1.87), and from female headed households (AOR = 1.16, 95% CI; 1.01-1.33) compared to women who had no formal education, were from the poorest wealth quintile and belonged to male headed households, respectively. We found lower odds of ovulatory cycle knowledge among women who had 2-4 parity history (AOR = 0.80, 95% CI; 0.65-0.99) compared to those with history of one parity. CONCLUSIONS: The findings indicate that the knowledge of the ovulatory cycle is lacking in SSA. Improving health insurance enrollment should be considered to increase ovulatory cycle knowledge as an approach to reduce the region's unplanned pregnancy rate. Strategies for improving opportunities that contribute to women's empowerment and autonomy as well as sexual and reproductive health approaches targeting women who are in poorest quintiles, not formally educated, belonging to male headed households, and having high parity should be considered.


Asunto(s)
Seguro de Salud , Embarazo , Humanos , Femenino , Masculino , Análisis Multinivel , Oportunidad Relativa , Paridad , Índice de Embarazo
18.
Afr Health Sci ; 23(1): 417-428, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37545914

RESUMEN

Background: Infant mortality remains a major developmental challenge in many low-income countries. Epidemiological evidence suggests that infant acquisition of maternal microbiome is essential for programming of immunity and metabolism. As such, irrational maternal antibiotic use may affect infant health. Objectives: The aim of the study was to determine the effects of prenatal antibiotic use on early postnatal life (90 days) in a low-income community in Ghana. Methodology: The study was a retrospective study of 412 mother-baby pair medical records in a low-income community in rural Ghana. Results: During the ninety-day period, the prevalence and relative risk of neonatal sepsis, respiratory disorders, and dermatitis were significantly higher in infants treated prenatally with antibiotics compared to untreated infants. Prenatal antibiotic treatment was not significantly associated with the risk of developing neonatal jaundice and conjunctivitis. However, prenatally antibiotic exposed infants were three times likely to visit the hospital for a non-scheduled/non-review treatment within the first 90 days compared to unexposed babies. Conclusions: Intrapartum antibiotic treatment is associated with poor early infant health. Rationalizing antibiotic use during pregnancy may contribute to reducing infant mortality.


Asunto(s)
Antibacterianos , Salud del Lactante , Lactante , Recién Nacido , Embarazo , Femenino , Humanos , Estudios Retrospectivos , Ghana/epidemiología , Antibacterianos/uso terapéutico , Mortalidad Infantil , Instituciones de Salud
19.
Front Reprod Health ; 5: 944372, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37457431

RESUMEN

Background: Persons living in sub-Saharan Africa (SSA) face disproportionate risk from overlapping epidemics of HIV and bacterial sexually transmitted infections (STIs). Pre-exposure prophylaxis (PrEP) for prevention is gradually being scaled up globally including in several settings in SSA, which represents a key opportunity to integrate STI services with HIV pre-exposure prophylaxis (PrEP). However, there is limited literature on how to successfully integrate these services, particularly in the SSA context. Prior studies and reviews on STI and PrEP services have largely focused on high income countries. Methods: We conducted a scoping review of prior studies of integration of STI and PrEP services in SSA. We searched PubMed, EMBASE, Cochrane, and CINAHL, in addition to grey literature to identify studies that were published between January 2012 and December 2022, and which provided STI and PrEP services in SSA, with or without outcomes reported. Citations and abstracts were reviewed by two reviewers for inclusion. Full texts were then retrieved and reviewed in full by two reviewers. Results: Our search strategy yielded 1951 records, of which 250 were retrieved in full. Our final review included 61 reports of 45 studies. Most studies were conducted in Southern (49.2%) and Eastern (24.6%) Africa. Service settings included public health clinics (26.2%), study clinics (23.0%), sexual and reproductive care settings (23.0%), maternal and child health settings (8.2%), community based services (11.5%), and mobile clinics (3.3%). A minority (11.4%) of the studies described only syndromic STI management while most (88.6%) included some form of etiological laboratory STI diagnosis. STI testing frequency ranged from baseline testing only to monthly screening. Types of STI tested for was also variable. Few studies reported outcomes related to implementation of STI services. There were high rates of curable STIs detected by laboratory testing (baseline genitourinary STI rates ranged from 5.6-30.8% for CT, 0.0-11.2% for GC, and 0.4-8.0% for TV). Discussion: Existing studies have implemented a varied range of STI services along with PrEP. This range reflects the lack of specific guidance regarding STI services within PrEP programs. However, there was limited evidence regarding implementation strategies for integration of STI and PrEP services in real world settings.

20.
Parasit Vectors ; 16(1): 206, 2023 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-37337296

RESUMEN

BACKGROUND: The majority of the African population lives in rural areas and depends on agriculture for their livelihoods. To increase the productivity and sustainability of their farms, they need access to affordable yield-enhancing inputs of which parasite control is of paramount importance. We therefore determined the status of current tick species with the highest economic impact on cattle by sampling representative numbers of animals in each of seven sub-Saharan countries. METHODS: Data included tick species' half-body counts from approximately 120 cattle at each of two districts per country, collected four times in approximately 1 year (to include seasonality). Study sites were chosen in each country to include high cattle density and tick burden. RESULTS: East Africa (Ethiopia, Uganda and Tanzania) showed overall a higher diversity and prevalence in tick infestations compared to West African countries (Benin, Burkina Faso, Ghana and Nigeria). In East Africa, Amblyomma variegatum (vector of Ehrlichia ruminantium), Rhipicephalus microplus (Babesia bovis, B. bigemina, Anaplasma marginale), R. evertsi evertsi (A. marginale) and R. appendiculatus (Theileria parva) were the most prevalent tick species of economic importance. While the latter species was absent in West Africa, here both A. variegatum and R. microplus occurred in high numbers. Rhipicephalus microplus had spread to Uganda, infesting half of the cattle sampled. Rhipicephalus appendiculatus is known for its invasive behaviour and displacement of other blue tick species, as observed in other East and West African countries. Individual cattle with higher body weights, as well as males, were more likely to be infested. For six tick species, we found reduced infestation levels when hosts were treated with anti-parasiticides. CONCLUSIONS: These baseline data allow the determination of possible changes in presence and prevalence of ticks in each of the countries targeted, which is of importance in the light of human-caused climate and habitat alterations or anthropogenic activities. As many of the ticks in this study are vectors of important pathogens, but also, as cattle may act as end hosts for ticks of importance to human health, our study will help a wide range of stakeholders to provide recommendations for tick infestation surveillance and prevention.


Asunto(s)
Enfermedades de los Bovinos , Rhipicephalus , Infestaciones por Garrapatas , Enfermedades por Picaduras de Garrapatas , Humanos , Masculino , Animales , Bovinos , Ganado , Enfermedades por Picaduras de Garrapatas/epidemiología , Enfermedades por Picaduras de Garrapatas/veterinaria , Enfermedades por Picaduras de Garrapatas/parasitología , Enfermedades de los Bovinos/parasitología , Infestaciones por Garrapatas/epidemiología , Infestaciones por Garrapatas/veterinaria , Infestaciones por Garrapatas/parasitología , Uganda/epidemiología , Burkina Faso
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