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Temperature and humidity are studied in the context of seasonal infections in temperate and tropical zones, but the relationship between viral trends and climate variables in temperate subtropical zones remains underexplored. Our retrospective study analyzes respiratory pathogen incidence and its correlation with climate data in a subtropical zone. Retrospective observational study at Moinhos de Vento Hospital, South Brazil, aiming to assess seasonal trends in respiratory pathogens, correlating them with climate data. The study included patients of all ages from various healthcare settings, with data collected between April 2022 and July 2023. Biological samples were analyzed for 24 pathogens using polymerase chain reaction and hybridization techniques; demographic variables were also collected. The data was analyzed descriptively and graphically. Spearman tests and Poisson regression were used as correlation tests. Tests were clustered according to all pathogens, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), influenza viruses, rhinovirus, and respiratory syncytial virus (RSV). Between April 2022 and July 2023, 3329 tests showed a 71.6% positivity rate. Rhinovirus and RSV predominated, exhibiting seasonal patterns. Temperature was inversely correlated with the viruses, notably rhinovirus, but SARS-CoV-2 was positively correlated. Air humidity was positively correlated with all pathogens, RSV, rhinovirus, and atmospheric pressure with all pathogens and rhinovirus. Our results showed statistically significant correlations, with modest effect sizes. Our study did not evaluate causation effects. Despite the correlation between climate and respiratory pathogens, our work suggests additional factors influencing transmission dynamics. Our findings underscore the complex interplay between climate and respiratory infections in subtropical climates.
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COVID-19 , Umidade , Estações do Ano , Temperatura , Humanos , Estudos Retrospectivos , COVID-19/epidemiologia , COVID-19/transmissão , COVID-19/virologia , Brasil/epidemiologia , Feminino , Masculino , Adulto , Pessoa de Meia-Idade , Criança , Adolescente , Pré-Escolar , Idoso , Adulto Jovem , Lactente , SARS-CoV-2/genética , SARS-CoV-2/isolamento & purificação , Clima , Infecções Respiratórias/virologia , Infecções Respiratórias/epidemiologia , Clima Tropical , Recém-Nascido , Rhinovirus/genética , Rhinovirus/isolamento & purificação , Incidência , Infecções por Vírus Respiratório Sincicial/epidemiologia , Infecções por Vírus Respiratório Sincicial/virologia , Idoso de 80 Anos ou maisRESUMO
This multicenter study in Italian hospitals highlights the epidemiologic disruptions in the circulation of the 5 main respiratory viruses from 2019 to 2023. Our data reveal a resurgence of respiratory syncytial virus and influenza during the 2022-2023 winter season, with an earlier peak in cases for both viruses, emphasizing the importance of timely monitoring.
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Hospitalização , Infecções por Vírus Respiratório Sincicial , Infecções Respiratórias , Estações do Ano , Humanos , Itália/epidemiologia , Estudos Retrospectivos , Hospitalização/estatística & dados numéricos , Lactente , Pré-Escolar , Criança , Infecções Respiratórias/epidemiologia , Infecções Respiratórias/virologia , Infecções por Vírus Respiratório Sincicial/epidemiologia , Influenza Humana/epidemiologia , Masculino , Feminino , Adolescente , Recém-NascidoRESUMO
Introducción: La bronquiolitis constituye una de las principales causas de Infecciones Respiratorias Agudas Bajas en Pediatría, y es responsable de una proporción significativa de hospitalizaciones en lactantes, fundamentalmente, en menores de 1 año. Su diagnóstico es clínico, caracterizado por síntomas y signos de amplio grado de gravedad. Objetivo: Describir las características clínico-etiológicas de casos de bronquiolitis en menores de 1 año, internados en un hospital de niños de la ciudad de Santa Fe, durante un periodo de un año. Materiales y Métodos: Estudio observacional, transversal. Se analizaron datos demográficos, clínicos y de laboratorio de fichas médicas de vigilancia epidemiológica. Las técnicas diagnósticas usadas según el agente viral fueron RT-PCR en tiempo real, PCR-punto final e Inmunofluorescencia Indirecta. Resultados: Sobre un total de 108 casos, 90,7% tuvo de 1 a 6 meses de edad. La mediana de internación fue de 5 días, y el nacimiento prematuro fue la condición médica previa más frecuente. Un 78,7% (85) tuvo diagnóstico viral positivo, siendo Rinovirus (hRV) y Virus Sincicial Respiratorio (VSR) los agentes más prevalentes, tanto en infección única como en coinfección. El tiempo de oxigenoterapia fue mayor en los pacientes más graves (p<0,001). El 32,4% (35) recibió alguna medicación que fue, en mayor frecuencia, antibiótico. Se encontró asociación positiva y significativa entre la edad menor de 3 meses y una hospitalización mayor a 5 días (OR=2,5; IC: 1,1-5,8; p=0,02); y entre un diagnóstico VSR positivo y un cuadro grave (OR: 7,7; IC: 1,95-39,6; p<0,001). Conclusión: Las características y condiciones médicas consideradas por la literatura como factores de riesgo para el padecimiento y la gravedad de una IRAB, fueron halladas con mayor frecuencia en la población de estudio. El hRV y el VRS fueron los agentes de mayor rescate viral, encontrándose una asociación positiva entre la infección por VSR y la gravedad del cuadro.
Introduction: Bronchiolitis is one of the main causes of Acute Lower Respiratory Infections in pediatrics, and is responsible for a significant proportion of hospitalizations in infants, mainly in children under 1 year of age. Its diagnosis is clinical. The disease is characterized by a wide variety and degree of signs and symptoms. Objective: To describe the clinical-etiological characteristics of cases of bronchiolitis in children under 1 year of age, admitted to a children's hospital in the city of Santa Fe, over a period of one year. Materials and Methods: This was an observational and cross-sectional study. Demographic, clinical and laboratory data from epidemiological surveillance medical records were analyzed. The diagnostic techniques used, based on the viral agent, were real-time RT-PCR, end-point PCR and Indirect Immunofluorescence. Results: Out of a total of 108 cases, 90.7% were between 1 and 6 months old. The median hospital stay was 5 days, and premature birth was the most common prior medical condition. 78.7% (85) had a positive viral diagnosis, with Rhinovirus (hRV) and Respiratory Syncytial Virus (RSV) being the most prevalent agents, both in single infection and coinfection. Oxygen therapy time was longer in the most seriously ill patients (p<0.001). 32.4% (35) received some medication, which was, most frequently, antibiotics. A positive and significant association was found between age less than 3 months and hospitalization longer than 5 days (OR=2.5; CI: 1.1-5.8; p=0.02); and between a positive RSV diagnosis and a severe condition (OR: 7.7; CI: 1.95-39.6; p<0.001). Conclusions: The characteristics and medical conditions considered by the literature as risk factors for the morbidity and severity of a lower respiratory tract infection were found more frequently in the study population. hRV and RSV were the most commonly-detected viral agents. We found a positive association between RSV infection and the severity of the condition.
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The prompt and accurate identification of the etiological agents of viral respiratory infections is a critical measure in mitigating outbreaks. In this study, we developed and clinically evaluated a novel melting-curve-based multiplex real-time PCR (M-m-qPCR) assay targeting the RNA-dependent RNA polymerase (RdRp) and nucleocapsid phosphoprotein N of SARS-CoV-2, the Matrix protein 2 of the Influenza A virus, the RdRp domain of the L protein from the Human Respiratory Syncytial Virus, and the polyprotein from Rhinovirus B genes. The analytical performance of the M-m-qPCR underwent assessment using in silico analysis and a panel of reference and clinical strains, encompassing viral, bacterial, and fungal pathogens, exhibiting 100% specificity. Moreover, the assay showed a detection limit of 10 copies per reaction for all targeted pathogens using the positive controls. To validate its applicability, the assay was further tested in simulated nasal fluid spiked with the viruses mentioned above, followed by validation on nasopharyngeal swabs collected from 811 individuals. Among them, 13.4% (109/811) tested positive for SARS-CoV-2, and 1.1% (9/811) tested positive for Influenza A. Notably, these results showed 100% concordance with those obtained using a commercial kit. Therefore, the M-m-qPCR exhibits great potential for the routine screening of these respiratory viral pathogens.
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Several studies have reported that viral infection is closely associated with the onset, progression, and exacerbation of asthma. The purpose of this review is to summarize the role that viral infections have in the pathogenesis of asthma onset and exacerbations, as well as discuss interrelated protective and risk factors of asthma and current treatment options. Furthermore, we present current knowledge of the innate immunological pathways driving host defense, including changes in the epithelial barrier. In addition, we highlight the importance of the genetics and epigenetics of asthma and virus susceptibility. Moreover, the involvement of virus etiology from bronchiolitis and childhood wheezing to asthma is described. The characterization and mechanisms of action of the respiratory viruses most frequently related to asthma are mentioned.
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Acute respiratory infections are a constant public health problem causing childhood morbidity and mortality worldwide. Reported cases of major respiratory infections decreased in 2020 after restrictive measures were adopted to contain the COVID-19 pandemic, but there is little data on the impact after these measures were relaxed in the subsequent years. This study conducted molecular analysis to identify rhinovirus, respiratory syncytial virus, influenza A virus, and adenovirus in SARS-CoV-2-negative samples taken from symptomatic pediatric patients during 2021 and 2022 to ascertain the impact of pandemic response measures within the broader epidemiological scenario. The positivity rates found were 28.3% and 50.8%, in 2021 and 2022, respectively, representing a significant increase (1.8 times) in the circulation of non-SARS-CoV-2 viruses after the reduction of non-pharmacological measures to contain the COVID-19 pandemic. Within the positive samples, rhinovirus and respiratory syncytial virus were most frequent (44.4 and 18% in 2021; 44.5 and 22.5% in 2022), whereas influenza A and adenovirus were found in lower frequency (12.5 and 5.5% in 2021; 13.4 and 4.9% in 2022, respectively). Because these different respiratory virus diseases produce similar symptoms, diagnosis based on clinical condition alone can be inaccurate, and more reliable testing is required to select the best therapeutic approach for each case. The loosening of restrictive measures to contain the COVID-19 pandemic led to higher numbers of other respiratory infections in pediatric patients. Ongoing surveillance and differential diagnosis of respiratory viruses are required to better understand their seasonal patterns after the COVID-19 pandemic to guide prevention and control strategies.
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COVID-19 , Infecções por Enterovirus , Infecções Respiratórias , Humanos , Criança , Pandemias , Brasil/epidemiologia , COVID-19/epidemiologia , Estações do Ano , SARS-CoV-2 , Vírus Sinciciais Respiratórios , Rhinovirus , Infecções Respiratórias/epidemiologiaRESUMO
INTRODUCTION: Acute Respiratory Infections (ARIs) are considered one of the leading causes of morbidity and mortality worldwide. Children under five and older adults are most likely to die from this cause. OBJECTIVE: To describe the behavior of infection by respiratory viruses other than SARS-CoV-2 during the pandemic in a clinic in the Colombian Caribbean. METHODS: This descriptive and retrospective study evaluates the characteristics, associated comorbidities, and requirements of hospitalization or Intensive Care Unit in patients diagnosed with respiratory viral infections treated at IMAT Oncomedica clinic from July 2020 to August 2022. RESULTS: This study evaluated 351 patients with respiratory symptoms, observing an exponential increase in cases of respiratory infection as of April 2022, with a high proportion of syncytial virus infections mainly in children under 18 years of age (22.1%) and Human Rhinovirus/Enterovirus in patients with solid tumors and hematological disorders (48.8%), the latter was associated with a higher rate of hospitalization and ICU requirement in the individuals evaluated. CONCLUSIONS: Respiratory viruses other than SARS-CoV-2, such as Rhino/Enterovirus, RSV, and adenovirus, are circulating in the population at a clinic on the Colombian Caribbean coast. The findings should motivate public health authorities to conduct more thorough surveillance in the rest of the state.
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COVID-19 , Infecções por Vírus Respiratório Sincicial , Vírus Sincicial Respiratório Humano , Infecções Respiratórias , Vírus , Criança , Humanos , Lactente , Adolescente , Idoso , SARS-CoV-2 , Estudos Retrospectivos , Colômbia/epidemiologia , Pandemias , COVID-19/epidemiologia , COVID-19/complicações , Infecções Respiratórias/epidemiologia , Região do Caribe/epidemiologia , Infecções por Vírus Respiratório Sincicial/epidemiologiaRESUMO
Introducción. Los virus son los principales agentes etiológicos en las infecciones respiratorias agudas graves; un alto porcentaje queda sin diagnóstico viral. Objetivo. Describir la frecuencia de rinovirus y metapneumovirus en pacientes pediátricos de una unidad centinela de Mar del Plata con infección respiratoria aguda grave y resultado negativo para virus clásicos por inmunofluorescencia y biología molecular. Población y métodos. Se realizó un estudio descriptivo de corte transversal. Se evaluó la presencia de rinovirus y metapneumovirus por biología molecular en 163 casos negativos para panel respiratorio por técnicas de vigilancia referencial, durante todo el año 2015. Resultados. Se detectó rinovirus en el 51,5 % de los casos, metapneumovirus en el 9,8 % y coinfección rinovirus-metapneumovirus en el 6,1 %. Fueron negativos para ambos virus el 32,5 %. Conclusiones. La selección de muestras sin diagnóstico virológico permitió identificar rinovirus y metapneumovirus como agentes causales de infecciones respiratorias agudas graves pediátricas y su impacto en la morbimortalidad infantil y en nuestro sistema sanitario.
Introduction. Viruses are the main etiologic agents involved in severe acute respiratory tract infections; a viral diagnosis is not established in a high percentage of cases. Objective. To describe the frequency of rhinovirus and metapneumovirus in pediatric patients with severe acute respiratory infection and negative results for typical viruses by immunofluorescence and molecular biology at a sentinel unit of Mar del Plata. Population and methods. This was a descriptive, cross-sectional study. The presence of rhinovirus and metapneumovirus was assessed by molecular biology in 163 cases negative for respiratory panel by referral surveillance techniques throughout 2015. Results. Rhinovirus was detected in 51.5% of cases, metapneumovirus in 9.8%, and coinfection with rhinovirus and metapneumovirus in 6.1%. Results were negative for both viruses in 32.5%. Conclusions. The selection of samples without a viral diagnosis allowed us to identify rhinovirus and metapneumovirus as causative agents of severe acute respiratory infections in children and assess their impact on child morbidity and mortality and on our health care system
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Humanos , Recém-Nascido , Lactente , Pré-Escolar , Criança , Pneumonia , Infecções Respiratórias/diagnóstico , Vírus , Metapneumovirus , Infecções por Enterovirus , Rhinovirus , Estudos TransversaisRESUMO
High altitude pulmonary edema (HAPE) is a multifactorial condition that may occur after ascent of high altitudes, especially in genetic predisposed individuals. Diagnosis is challenging and could lead to potentially lethal complications such as acute respiratory distress syndrome (ARDS). We present one of the few reported cases of HAPE below 3000 m of altitude, and the first to our knowledge to present with a concomitant acute Rhinovirus infection, precipitating and complicating the diagnosis and clinical course. Clinical manifestations, treatment, and outcomes are shown below.
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Introduction. Viruses are the main etiologic agents involved in severe acute respiratory tract infections; a viral diagnosis is not established in a high percentage of cases. Objective. To describe the frequency of rhinovirus and metapneumovirus in pediatric patients with severe acute respiratory infection and negative results for typical viruses by immunofluorescence and molecular biology at a sentinel unit of Mar del Plata. Population and methods. This was a descriptive, cross-sectional study. The presence of rhinovirus and metapneumovirus was assessed by molecular biology in 163 cases negative for respiratory panel by referral surveillance techniques throughout 2015. Results. Rhinovirus was detected in 51.5% of cases, metapneumovirus in 9.8%, and coinfection with rhinovirus and metapneumovirus in 6.1%. Results were negative for both viruses in 32.5%. Conclusions. The selection of samples without a viral diagnosis allowed us to identify rhinovirus and metapneumovirus as causative agents of severe acute respiratory infections in children and assess their impact on child morbidity and mortality and on our health care system.
Introducción. Los virus son los principales agentes etiológicos en las infecciones respiratorias agudas graves; un alto porcentaje queda sin diagnóstico viral. Objetivo. Describir la frecuencia de rinovirus y metapneumovirus en pacientes pediátricos de una unidad centinela de Mar del Plata con infección respiratoria aguda grave y resultado negativo para virus clásicos por inmunofluorescencia y biología molecular. Población y métodos. Se realizó un estudio descriptivo de corte transversal. Se evaluó la presencia de rinovirus y metapneumovirus por biología molecular en 163 casos negativos para panel respiratorio por técnicas de vigilancia referencial, durante todo el año 2015. Resultados. Se detectó rinovirus en el 51,5 % de los casos, metapneumovirus en el 9,8 % y coinfección rinovirus-metapneumovirus en el 6,1 %. Fueron negativos para ambos virus el 32,5 %. Conclusiones. La selección de muestras sin diagnóstico virológico permitió identificar rinovirus y metapneumovirus como agentes causales de infecciones respiratorias agudas graves pediátricas y su impacto en la morbimortalidad infantil y en nuestro sistema sanitario.
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Infecções por Enterovirus , Metapneumovirus , Infecções Respiratórias , Infecções Respiratórias/diagnóstico , Infecções Respiratórias/virologia , Infecções por Enterovirus/diagnóstico , Infecções por Enterovirus/epidemiologia , Rhinovirus , Pneumonia/diagnóstico , Pneumonia/epidemiologia , Estudos Transversais , Humanos , Lactente , Criança , Monitoramento EpidemiológicoRESUMO
La pandemia de COVID-19 enfrentó a la humanidad a un gran desafío y hemos ido aprendiendo a medida que avanzó. La aparición de este virus, su comportamiento por si solo y en conjunto con los otros virus nos mantuvo alerta.. Los pacientes pediátricos asmáticos, a pesar de lo que se pensó en un principio, son menos afectados y hacen un cuadro clínico más leve. Objetivo: presentar un caso clínico de un paciente asmático, con una evolución tortuosa por co-infección SARS-CoV-2 y Rinovirus (RV) y revisión de la litaratura. Se trata de un escolar de 6 años, asmático con mal control, con 2 dosis de vacuna anti SARS-CoV-2, que presento un estado asmático por rinovirus y posterior evolución con neumonía grave por SARS-CoV-2, requiriendo ventilación mecánica invasiva y estadía en UCI Pediátrica. Es probable que la gravedad del caso presentado se deba al mal control del asma antes de la infección, ya que se ha visto que los niños asmáticos alérgicos presentan un factor protector para infección grave por SARS-CoV-2, lo cual esta supeditado a un buen control de su enfermedad basal.
The COVID-19 pandemic presented a great challenge and we have been learning as it has progressed. The appearance of this virus, its behavior by itself and in conjunction with the other viruses kept us alert. Pediatric asthmatic patients, despite what was initially thought, are less affected and present a milder clinical picture. Objective: to present a clinical case of an asthmatic patient, with a tortuous evolution due to SARS-CoV-2 and Rhinovirus (RV) co-infection and a literature review. This is a 6-year-old schoolboy, asthmatic with poor control, with 2 doses of the SARS-CoV-2 vaccine, who presents asthmatic status due to rhinovirus and subsequent evolution with severe pneumonia due to SARS-CoV-2, requiring invasive mechanical ventilation and stay in Pediatric ICU. It is likely that the severity of the case presented is due to poor asthma control before infection, since it has been seen that allergic asthmatic children present a protective factor for severe infection by SARS-CoV-2, which is subject to good control of his basal disease.
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Humanos , Masculino , Criança , Asma/complicações , Infecções por Picornaviridae/complicações , COVID-19/complicações , Estado Asmático , Radiografia Torácica , Tomografia Computadorizada por Raios X , Infecções por Picornaviridae/diagnóstico por imagem , SARS-CoV-2 , COVID-19/diagnóstico por imagemRESUMO
Abstract Objective: Changes in the epidemiology of respiratory infections during the restrictions imposed as a response to the coronavirus disease 2019 (COVID-19) pandemic have been reported elsewhere. The present study's aim was to describe the prevalence of a large array of respiratory pathogens in symptomatic children and adolescents during the pandemic in Southern Brazil. Methods: Hospitalized and outpatients aged 2 months to 18 years with signs and symptoms of acute COVID-19 were prospectively enrolled in the study from May to November 2020 in two hospitals in a large metropolitan area in a Brazilian city. All participants performed a real-time PCR panel assessing 20 respiratory pathogens (three bacteria and 17 viruses). Results: 436 participants were included, with 45 of these hospitalized. Rhinovirus was the most prevalent pathogen (216/436) followed by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, 97/436), with a coinfection of these two viruses occurring in 31/436 participants. The remaining pathogens were found in 24 symptomatic participants (adenovirus, n = 6; Chlamydophila pneumoniae, n = 1; coronavirus NL63, n = 2; human enterovirus, n = 7; human metapneu-movirus, n = 2; Mycoplasma pneumoniae, n = 6). Hospitalization was more common among infants (p = 0.004) and those with pathogens other than SARS-CoV-2 (p = 0.001). Conclusion: During the period of social distancing in response to COVID-19, the prevalence of most respiratory pathogens was unusually low. Rhinovirus remained as the main virus co-circulating with SARS-CoV-2. COVID-19 in symptomatic children was less associated with hospitalization than with other respiratory infections in children and adolescents.
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The COVID-19 pandemic circumstances have varied the pathogens related to acute respiratory infections (ARI), and most specialists have ignored them due to SARS-CoV-2's similar symptomatology. We identify respiratory pathogens with multiplex PCR in samples with presumptive SARS-CoV-2 but negative RT-qPCR results. We performed a retrospective transversal study employing clinical data and nasopharyngeal swab samples from patients with suspected clinical SARS-CoV-2 infection and a negative PCR result in a private laboratory in Lima, Peru. The samples were analyzed using the FilmArray™ respiratory panel. Of 342 samples, we detected at least one pathogen in 50% of the samples. The main ones were rhinovirus (54.38%), influenza A(H3N2) (22.80%), and respiratory syncytial virus (RSV) (14.04%). The clinical characteristics were sore throat (70.18%), cough (58.48%), nasal congestion (56.43%), and fever (40.06%). Only 41.46% and 48.78% of patients with influenza met the definition of influenza-like illness (ILI) by the World Health Organization (WHO) (characterized by cough and fever) and the Centers for Disease Control and Prevention (CDC) (characterized by fever and cough and sore throat), respectively. A higher prevalence of influenza was associated with ILI by WHO (aPR: 2.331) and ILI by CDC (aPR: 1.892), which was not observed with other respiratory viruses. The clinical characteristic associated with the increased prevalence of rhinovirus was nasal congestion (aPR: 1.84). For patients with ARI and negative PCR results, the leading respiratory pathogens detected were rhinovirus, influenza, and RSV. Less than half of patients with influenza presented ILI, although its presence was specific to the disease.
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Background: Human rhinoviruses (HRVs) are a common cause of influenza-like illness, with the ability to infect the upper and lower respiratory tracts. In this study we aim to describe the clinical and molecular features of HRV infection in Mexican children and adults. Methods: We performed a hospital-based, 4-year multicenter prospective observational cohort study of patients with influenza-like illness. Participants who tested positive for HRV were included. We described demographic, clinical, and laboratory characteristics and the association between HRV types, illness severity, and clinical outcomes. Results: Of the 5662 subjects recruited, 1473 (26%) had HRV; of those, 988 (67.1%) were adults (≥18 years) and 485 (32.9%) were children. One hundred sixty-seven (11.33%) samples were sequenced; 101 (60.5%) were rhinovirus species A (HRV-A), 22 (13.2%) were rhinovirus species B (HRV-B), and 44 (26.3%) were rhinovirus species C (HRV-C). Among children and adults, 30.5% and 23.5%, respectively, were hospitalized (non-intensive care unit [ICU]). The odds of HRV-C are higher than HRV-A for participants in the ICU (compared to outpatient) and when platelets, lymphocytes, white blood cells, and lactate dehydrogenase are increased. The odds of HRV-C are higher than HRV-A and HRV-B with shortness of breath. The odds of HRV-A are higher than HRV-B, and the odds of HRV-B are higher than HRV-C, when mild symptoms like muscle ache and headache occur. Conclusions: Rhinoviruses are a common cause of influenza-like illness. It is necessary to improve the surveillance, testing, and species identification for these viruses to understand different clinical presentations and risk factors associated with worse outcomes. Clinical Trials Registration. NCT01418287.
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Abstract Objectives: To detect RSV or other thirteen respiratory viruses as possible causer agent of bronchiolitis in infants. Method: This is an epidemiological analytical study, conducted using a nasopharyngeal aspirate of 173 hospitalized children younger than two years old with severe bronchiolitis in three hospitals in the Campinas Metropolitan Region (CMR) during 2013-14. The data was statically evaluated by Pearson's chi-squared test with statistical significance of 0.05 and 95% confidence level. Results: As expected, the most prevalent viruses detected were RSV A and B in 47% and 16% of the samples, respectively. However, almost a third of severe bronchiolitis cases there were no detection of RSV, and the viruses more commonly detected were rhinoviruses, which were identified in almost a quarter of all positive samples for at least a viral agent. Conclusions: Although nothing could be concluded from the disease severity and clinicalepidemiological data, the present study's results indicate that severe bronchiolitis is not always related to RSV infections in children younger than two years old, and the rhinoviruses were more prevalent in these cases. These findings reinforce the need to carry out a
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OBJECTIVE: Changes in the epidemiology of respiratory infections during the restrictions imposed as a response to the coronavirus disease 2019 (COVID-19) pandemic have been reported elsewhere. The present study's aim was to describe the prevalence of a large array of respiratory pathogens in symptomatic children and adolescents during the pandemic in Southern Brazil. METHODS: Hospitalized and outpatients aged 2 months to 18 years with signs and symptoms of acute COVID-19 were prospectively enrolled in the study from May to November 2020 in two hospitals in a large metropolitan area in a Brazilian city. All participants performed a real-time PCR panel assessing 20 respiratory pathogens (three bacteria and 17 viruses). RESULTS: 436 participants were included, with 45 of these hospitalized. Rhinovirus was the most prevalent pathogen (216/436) followed by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, 97/436), with a coinfection of these two viruses occurring in 31/436 participants. The remaining pathogens were found in 24 symptomatic participants (adenovirus, n = 6; Chlamydophila pneumoniae, n = 1; coronavirus NL63, n = 2; human enterovirus, n = 7; human metapneumovirus, n = 2; Mycoplasma pneumoniae, n = 6). Hospitalization was more common among infants (p = 0.004) and those with pathogens other than SARS-CoV-2 (p = 0.001). CONCLUSION: During the period of social distancing in response to COVID-19, the prevalence of most respiratory pathogens was unusually low. Rhinovirus remained as the main virus co-circulating with SARS-CoV-2. COVID-19 in symptomatic children was less associated with hospitalization than with other respiratory infections in children and adolescents.
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COVID-19 , Coinfecção , Infecções Respiratórias , Vírus , Lactente , Criança , Adolescente , Humanos , Pandemias , COVID-19/epidemiologia , Rhinovirus , SARS-CoV-2 , Coinfecção/epidemiologiaRESUMO
Resumen Introducción: las infecciones respiratorias agudas virales se consideran una de las principales causas de mortalidad y morbilidad en pediatría, El Síndrome Respira torio Agudo Severo o Grave 2 (SARS-CoV-2), se ha convertido en un importante problema para la salud pública mundial por su alta transmisibilidad, el objetivo del estudio es describir el comportamiento de los virus respiratorios detectados por RT-PCR en niños hospitalizados por infección respiratoria aguda (IRA) en tiempos de SARS-CoV-2/COVID-19 en un centro de atención pediátrica de Cali-Colombia. Metodología: Estudio observacional de corte transversal retrospectivo, donde se evaluaron 113 pacientes mayores de 28 días y menores de 18 años entre marzo y noviembre del 2020, hospitalizados con diagnostico confirmado IRA y con Reacción en cadena de la polimerasa en tiempo Real (RT-PCR) positiva para virus respiratorios. Resultados: Predominio del género masculino (64.6%). en 74.3% se diagnosticó con IRA baja, los principales síntomas fueron tos en 92% y fiebre 74.3% Se identificó SARS-CoV-2 en 53%, Human Rhinovirus/Enterovirus en 27.41% y Virus Respiratorio Sincitial en 15%. El 34.5% de los pacientes requirieron unidad de cuidados intensivos y 15.9% ventilación mecánica Conclusiones: La infección por SARS-CoV-2 fue más común en los pacientes hospitalizados tanto en salas generales como en la unidad de cuidados intensivos pediátricos
Abstract Introduction: viral acute respiratory infections have been considered of the main causes of mortality and morbidity in pediatrics, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which has become an important problem for global public health for its high transmissibility. The objective of the study is to describe the behavior of respiratory viruses detected by RT-PCR in children hospitalized for acute respiratory infection (ARI) in times of SARS-CoV-2 / COVID19 in pediatric care center in Cali Colombia Methodology: observational with a retrospective cross-sectional study. 113 patients older than 28 days and under 18 years in March to November 2020, hospita lized with a confirmed diagnosis of ARI and Real Time Polymerase Chain Reaction (RT-PCR) positive for respiratory viruses. Results: Predominance of gender male 64.6%. 74.3% with a diagnosis of low ARI, main symptoms presented were cough 92% and fever 74.3%, SARS-CoV-2 identified 53%, Human Rhinovirus / Enterovirus 27.41% and Respiratory Syncytial Virus 15%. 34.5% of the patients required an intensive care unit with mechanical ventilation requirement 15.9% Conclusions: infection by SARS-CoV-2 was more common in hospitalized patients in both general wards as in the pediatric intensive care unit.
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OBJECTIVES: To detect RSV or other thirteen respiratory viruses as possible causer agent of bronchiolitis in infants. METHOD: This is an epidemiological analytical study, conducted using a nasopharyngeal aspirate of 173 hospitalized children younger than two years old with severe bronchiolitis in three hospitals in the Campinas Metropolitan Region (CMR) during 2013-14. The data was statically evaluated by Pearson's chi-squared test with statistical significance of 0.05 and 95% confidence level. RESULTS: As expected, the most prevalent viruses detected were RSV A and B in 47% and 16% of the samples, respectively. However, almost a third of severe bronchiolitis cases there were no detection of RSV, and the viruses more commonly detected were rhinoviruses, which were identified in almost a quarter of all positive samples for at least a viral agent. CONCLUSIONS: Although nothing could be concluded from the disease severity and clinical-epidemiological data, the present study's results indicate that severe bronchiolitis is not always related to RSV infections in children younger than two years old, and the rhinoviruses were more prevalent in these cases. These findings reinforce the need to carry out a viral diagnosis in the hospital emergency would be very appropriate for all cases of respiratory infections in children, even for diseases in which the primary etiological agent seems to be well known.
Assuntos
Bronquiolite Viral , Bronquiolite , Infecções por Vírus Respiratório Sincicial , Infecções Respiratórias , Bronquiolite/diagnóstico , Bronquiolite/epidemiologia , Bronquiolite Viral/epidemiologia , Criança , Pré-Escolar , Humanos , Lactente , Infecções por Vírus Respiratório Sincicial/epidemiologia , Rhinovirus , Índice de Gravidade de DoençaRESUMO
ABSTRACT This study aims to assess COVID-19 and other respiratory viruses in pediatric patients. Between April 17 and September 30, 2020, we collected 1,566 respiratory samples from 1,044 symptomatic patients who were younger than 18 years old to assess SARS-CoV-2 infection. Of these, 919 were analyzed for other respiratory pathogens (ORP). Patients with laboratory-confirmed COVID-19 or ORP were included. We evaluated 76 pediatric COVID-19 infections and 157 other respiratory virus infections. Rhinovirus occurred in 132/157 (84%). COVID-19 patients who were significantly older, had more fevers, headaches and pneumonia than those with ORP. The median white blood cell count was lower in patients with SARS-CoV-2 than in those with ORP (6,470 versus 8,170; p=0.02). COVID-19 patients had significantly worse symptoms than those with ORP.
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RESUMEN Introducción: La Bronquiolitis se ha asociado a sibilancias recurrentes. Objetivo: analizar la incidencia de sibilancias recurrentes, hospitalizaciones y atopia/asma en pacientes con antecedentes de hospitalización por bronquiolitis por RV antes de los 12 meses de edad. Materiales y Métodos: estudio de cohorte retrospectiva. Ingresaron pacientes de 2 a 4 años con sibilancias recurrentes y antecedentes de hospitalización por bronquiolitis antes de los 12 meses de edad, con retorno viral positivo por estudio molecular. Fueron estudiados los datos demográficos, hospitalizaciones, atopia personal y familiar, asma y exposición al humo. Los datos fueron analizados en SPSS utilizando estadísticas descriptivas e inferenciales. Los resultados se expresaron en RR con IC 95%. El protocolo fue aprobado por el comité de ética institucional. Resultados: Ingresaron 120 pacientes. No hubo diferencias en la incidencia de sibilancias recurrentes en el grupo expuesto y el control50,9% vs 49% respectivamente p=0,85. Las hospitalizaciones por sibilancias y la presencia de atopia fueron más frecuentes en el grupo Rinovirus, RR=1,7 (IC 95% 1,2 -2,9) p=0,03 y RR 1,6 (IC 95% 1,2 -2,2) p= 0,005 respectivamente. Conclusiones: la incidencia de sibilancias recurrentes fue similar en ambas cohortes. Las hospitalizaciones por sibilancias y la atopia/asma fue mayor en el grupo Rinovirus.
ABSTRACT Introduction: Bronchiolitis has been associated with recurrent wheezing. Objective: to analyze the incidence of recurrent wheezing, hospitalizations and atopy / asthma in patients with a history of hospitalization for rhinovirus (RV) bronchiolitis before 12 months of age. Materials and Methods: this was a retrospective cohort study. We included patients aged 2 to 4 years with recurrent wheezing and a history of hospitalization for bronchiolitis before 12 months of age, with a positive viral testing by molecular study. Demographic data, hospitalizations, personal and family history of atopy, asthma and exposure to smoke were studied. The data were analyzed in SPSS using descriptive and inferential statistics. The results were expressed in RR with 95% CI. The protocol was approved by the institutional ethics committee. Results: 120 patients were included. There were no differences in the incidence of recurrent wheezing in the exposed and control groups, 50.9% vs 49%, respectively, p = 0.85. Hospitalizations for wheezing and the presence of atopy were more frequent in the Rhinovirus group, RR = 1.7 (95% CI 1.2 -2.9) p = 0.03 and RR 1.6 (95% CI 1, 2 -2.2) p = 0.005 respectively. Conclusions: the incidence of recurrent wheezing was similar in both cohorts. Hospitalizations for wheezing and atopy / asthma were higher in the Rhinovirus group.