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INTRODUCTION: During the SARS-CoV-2 pandemic, immune-mediated neurological events have been described in patients vaccinated against the virus or who have overcome the disease. Among these events is Idiopathic peripheral facial palsy or Bell's palsy. OBJECTIVES: To study the incidence of Bell's Palsy in the ENT emergency department of a tertiary hospital in Catalonia during the SARS-CoV-2 pandemic. METHODS: Retrospective historical cohort comparison study of patients diagnosed with Bell's palsy between January 2018 and December 2021. Crude incidence rates were calculated as the total number of events divided by person time at risk per 100.000 person-years. Observed (2020,2021) and historical (2018, 2019) rates were compared using standardized incidence rates with corresponding 95% confidence intervals. RESULTS: Of the total number of ENT emergency department visits from 2018 to 2021 (22.658), there were 247 cases of Bell's palsy. The incidence rate of Bell's palsy in the pre-pandemic group was 12,2 and 10,9 per 100.000 person-years for 2018 and 2019, respectively. The 2020 standardized incidence rate of Bell's palsy was 0,70 [95% CI 0,49 -1,01] and 1,25 [95% CI 0,93 to 1,67] for 2021. No significant differences were evident between the two groups. CONCLUSION: In our cohort, no association was found between vaccination or COVID-19 infection and the development of Bell's Palsy.

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PURPOSE: To evaluate the bacterobilia in patients undergoing pancreaticoduodenectomy (PD) based on whether they carry a preoperative biliary drainage or not and to analyse if a targeted perioperative antibiotic treatment based on the expected microbiology leads in no differences in Surgical Site Infections (SSI) between the groups. METHODS: Retrospective observational single-center study of patients undergoing pancreaticoduodenectomy with preoperative biliary stent (group P, Prosthesis) and without stent (group NP, No Prosthesis). Postoperative complications including SSI and its subtypes were analyzed after applying a targeted perioperative antibiotic treatment protocol with cefotaxime and metronidazole (group NP) and piperacillin-tazobactam (group P). RESULTS: Between January 2014 and December 2021, 127 patients were treated (84 in group NP and 43 in group P). Intraoperative cultures were positive in 16.7% (group NP) vs 76.7% (group P, p < 0.01). Microorganisms isolated in group NP included Enterobacterales (10.7%) and Enterococcus spp. (7.1%) with no Candida detected. In group P: Enterobacterales (51.2%), Enterococcus spp. (48.8%), and Candida (16.3%) were higher (p < 0.01%). No differences in morbidity and mortality were observed between the groups. SSI rate was 17.8% in group NP and 23.2% in group P (ns). CONCLUSION: Bacterobilia differs in patients with biliary drainage, showing a higher presence of Enterobacterales, Enterococcus spp., and Candida. There were no differences in SSI incidence after applying perioperative antibiotic treatment tailored to the expected microorganisms in each group. This raises the need to reconsider conventional surgical prophylaxis in patients with biliary stent.

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Routinely obtaining a sexual history is a necessary first step to identify which patients have specific sexual behaviours that may put them at risk and use appropriate protective measures, especially in vulnerable populations. However, late diagnosis of HIV infection remains very high. Combination prevention strategies based on condom promotion, harm reduction programs for people who inject drugs plus PrEP and HIV PEP are the best options to prevent new infections. Screening for STIs (including hepatotropic viruses) and early diagnosis and treatment are essential for the person since it improves the prognosis and complications and also for the community because it breaks the chain of transmission. People living with HIV who have an undetectable viral load do not transmit the virus sexually (undetectable=untransmittable).

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INTRODUCTION: The incidence of periprosthetic joint infection (PJI) in hip surgeries has significantly decreased thanks to intravenous (IV) antibiotic prophylaxis. However, in patients colonized with methicillin-resistant Staphylococcus aureus (MRSA) or those at risk of colonization, it is necessary to include vancomycin in the prophylaxis. Intraosseous administration of vancomycin could enhance its effectiveness in total hip arthroplasty (THA). MATERIALS AND METHODS: A retrospective study was conducted between March and December 2023 involving 53 patients scheduled for primary THA with colonization risk factors. The median age of the patients was 67 years (range 61 to 75), and all received treatment with intraosseous vancomycin (500mg). Detailed records and documentation of complications during hospitalization and the first three months post-surgery were maintained. As a secondary outcome measure, the incidence of PJI was explored. RESULTS: We administered 500mg of intraosseous vancomycin, injected into the greater trochanter, along with standard IV prophylaxis. The incidence of complications was 1.64%. The PJI rate at 90 days was 0%. CONCLUSIONS: Intraosseous administration of low-dose vancomycin in THA for patients at risk of MRSA colonization, combined with standard IV prophylaxis, was shown to be safe and did not present significant adverse effects. Furthermore, this strategy eliminates the logistical challenges associated with timely vancomycin administration. LEVEL OF EVIDENCE IV: Case Series.

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INTRODUCTION: Staphylococcus aureus stands as the predominant etiological agent in postoperative acute prosthetic joint infections (PJI), contributing to 35-50% of reported cases. This study aimed to evaluate the efficacy of dual prophylaxis incorporating cefuroxime and teicoplanin, in combination with nasal decolonization utilizing 70% alcohol, and oral and body lavage with chlorhexidine. MATERIAL AND METHODS: We conducted a retrospective review of electronic health records regarding primary and revision arthroplasties conducted at our institution from 2020 to 2021. Relevant variables linked to prosthetic joint infections (PJI) were documented until the latest follow-up. RESULTS: A total of 539 operations (447 primary arthroplasties and 92 revision arthroplasties) were performed on 519 patients. There were 11 cases of postoperative acute PJI, resulting in infection rates of 1.6% for primary arthroplasties and 4.3% for revision surgeries. Infections were more prevalent in male patients, individuals with an ASA classification>II, and those undergoing longer operations (>90min). S. aureus was not isolated in any of the cases. CONCLUSION: The prophylactic measures implemented in our institution have exhibited a high efficacy in preventing postoperative acute PJI caused by S. aureus.

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The management of urinary tract infection (UTI) in infants and children has changed significantly over the past few decades based on scientific evidence that questioned the efficacy of strategies used to prevent kidney injury and subsequent progression to chronic kidney disease, which is very unlikely in most paediatric cases. However, there is still substantial heterogeneity in its management and uncertainty regarding the diagnosis, indication of imaging tests, treatment or follow-up in these patients. The Spanish clinical practice guideline has been updated through the review of the literature published since 2009 and a rigorous evaluation of current clinical practice aspects, taking into account the evidence on the benefits of each intervention in addition to its risks and drawbacks to attempt to provide more precise recommendations.

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Oral candidiasis infection is particularly prevalent among individuals in HIV-positive patients. Antifungal drugs have shown promising therapeutic effects in treating oral candidiasis in HIV-positive patients. However, the selection of specific antifungal drugs for the treatment of oral candidiasis in HIV-positive patients lacks evidence-based guidelines. This study aims to address this gap by conducting a comprehensive review of relevant randomized controlled trials (RCTs) and performing a network meta-analysis to assess the efficacy of different antifungal drugs in treating oral candidiasis in HIV-positive patients. A systematic search was conducted in databases including EMBASE, Web of Science, Medline, and Cochrane databases to identify relevant articles. Additionally, key pertinent sources in the literatures were also reviewed. All studies published prior to August 2023 were eligible for inclusion. Two researchers independently conducted the screening of literature, extraction of data, and evaluation of quality. Pairwise and network meta-analysis were then performed to assess the primary outcomes of the randomized controlled trials (RCTs) included. The protocol was registered on the PROSPERO database (CRD42024513912). Twenty-six RCTs were included in this meta-analysis, involving a total of 3145 patients and evaluating seven interventions (placebo, fluconazole, itraconazole, nystatin, clotrimazole, ketoconazole, miconazole). Pairwise meta-analysis and network meta-analysis showed fluconazole was significantly efficacy in increasing mycological cure rates when compared with placebo, clotrimazole, and nystatin. Ketoconazole and miconazole were significantly efficacy in increasing mycological cure rates when compared with nystatin. Network meta-analysis also suggested the efficacy of the seven interventions in increasing mycological cure rates was ranked as follows: placebo (35.3%), fluconazole (95.2%), itraconazole (61.6%), nystatin (17.0%), clotrimazole (52.7%), ketoconazole (69.2%), miconazole (69.1%). The available evidence indicates that fluconazole had the greatest possibility to increase mycological cure rates in HIV-positive patients, while, nystatin was the least effective antifungal drug in increasing mycological cure rates in HIV-positive patients.

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OBJECTIVE: Central nervous system (CNS) infection poses a diagnostic challenge especially in elderly patients who frequently exhibit atypical symptoms. Our study aimed to identify patients with a low risk of CNS infection, in whom lumbar puncture (LP) could be avoided. METHODS: Observational study of consecutive adult patients who underwent a LP in the emergency room (ER) of Hospital Universitari Vall d'Hebron between January 2017 and December 2021. We performed a univariate and multivariate analysis to identify factors associated with non-CNS infection. These factors were used to create a combined variable, and its diagnostic positive predictive value and specificity to detect patients without CNS infections were calculated. RESULTS: We included 489 patients of which 77 (15.7%) were diagnosed with CNS infection. Median age was 62 years (IQR 41-78) and 240 (49.1%) were male. In the multivariate analysis, variables associated with non-CNS infection were female sex (OR 1.89; 95% CI 1.12-3.20), age older than 80 years (OR 3.14; 95% CI 1.20-8.19), previous cognitive impairment (OR 3.91; 95% CI 1.18-13.01), and clinical presentation without meningitis triad (fever, headache and neck stiffness) (OR 4.12; 95% CI 1.72-9.85). A composite variable encompassing age older than 80, cognitive impairment, and the absence of the meningitis triad was used as a diagnostic tool to identify patients with non-CNS infection, exhibiting a 98% positive predictive value and 99% specificity. CONCLUSIONS: This study identifies factors associated with a low risk of CNS infection. Thus, a more precise clinical approach could help clinicians to detect patients who would not benefit from a LP.

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OBJECTIVE: This study aimed to estimate the overall and annual age-standardized incidence of pregnancy-related pulmonary embolism (PE) in Spain from 2016 to 2021, explore the distribution of PE events during pregnancy and the postpartum period, identify potential risk factors, and estimate mortality rates during hospital admission. METHODS: In a retrospective, observational, population-based study, data from the Spanish National Hospital Discharge Database were analyzed to identify women with hospital episodes of pregnancy-related-PE. The primary outcome was the overall and annual age-standardized incidence of pregnancy-related-PE, with secondary aims including the distribution of events during pregnancy and postpartum and the calculation of age-standardized mortality rates during admission. RESULTS: Among 2,178,805 births from 2016 to 2021, 522 women were diagnosed with pregnancy-related PE, yielding an overall age-standardized incidence of 2.83 cases per 10,000 births. A non-significant increasing trend was observed from 2.43 to 4.18 cases per 10,000 births (p = 0.06). Comorbidities were low, with a notable association between PE and SARS-CoV-2 infection during the last two years. The mortality rate among women with pregnancy-related PE was 2.8%, with a higher incidence of PE reported during the postpartum period. CONCLUSION: The incidence of pregnancy-related-PE in Spain exhibits a non-significant increasing trend, with a significant risk of mortality. The association with SARS-CoV-2 infection underscores the importance of vigilant monitoring and management of pregnant women, particularly during pandemics. This study contributes specific data on the incidence and characteristics of pregnancy-related-PE in Spain, emphasizing the need to consider PE in the differential diagnosis and management strategies for pregnant and postpartum women.

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OBJECTIVE: To assess by [18F]FDG PET/MR the biomarkers of HIV-induced inflammation at baseline and 1 year post-antiretroviral therapy (ART). METHODS: Prospective study, 14 patients, newly diagnosed HIV-positive, asymptomatic. [18F]FDG PET/MRI (PET/MR-3.0T, Signa.GE) whole body and heart was performed, baseline and 1 year post-ART. Qualitative vascular assessment (hepatic reference). Quantitative assessment (SUVmax) of the whole body. T1 and T2 value estimation in 16 myocardial segments. RESULTS: Baseline CMR showed in 3 (21.4%) a decreased LVEF, normalising post-TAR. Fibrosis was ruled out (T1), with no signs of myocardial oedema (T2) at baseline or post-TAR. Four (28.6%) showed baseline vascular [18F]FDG uptake, two in ascending thoracic aorta and two in ascending and descending thoracic aorta, normalising post-TAR. All (100%) showed basal lymph-nodes activity; supra (n:14) and infradiaphragmatic (n:13), laterocervical (n:14) and inguinal (n:13), with variable number of territories (9 patients >6;64.3%). Post-ART, 7 patients (50%) showed resolution and the other 7 reduction in extension (0 patients >5): 7 supra (100%) and 2 infradiaphragmatic (28.6%), 5 in the axilla and 2 in the groin. All (100%) had persistent basal adenoid uptake post-ART, 9 (64.3%) splenic all resolved post-ART and 7 (50.5%) gastric, persistent 3 post-ART. CONCLUSIONS: Cardiovascular biomarkers by [18F]FDG PET/MR have shown baseline 28.6% of patients with large vessel activity and 21.4% with low LVEF, normalising post-ART. Inflammatory/immune biomarkers showed baseline activity in 100% of lymph-nodes, 100% adenoids, 64.3% splenic and 50.5% gastric. Post-TAR the reduction was 50% lymph-nodes, 0% adenoid, 100% splenic and 57.1% gastric.

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INTRODUCTION: Health care-associated infections (HAIs) contribute to morbidity and mortality and to the dissemination of multidrug-resistant organisms. Children admitted to the intensive care unit undergo invasive procedures that increase their risk of developing HAIs and sepsis. The aim of the study was to analyse factors associated with mortality due to sepsis arising from HAIs. PATIENTS AND METHODS: We conducted a case-control study in a 7-bed multipurpose paediatric intensive care unit in a tertiary care teaching hospital. The sample consisted of 90 children admitted between January 2014 and December 2018. The case group consisted of patients who died from sepsis associated with the main health care-associated infections; the control group consisted of patients who survived sepsis associated with the same infections. RESULTS: Death was associated with age less than or equal to 12 months, presence of comorbidity, congenital disease, recurrent ventilator-associated pneumonia and septic shock. In the multiple regression analysis, heart disease (OR, 12.48; CI 2.55-60.93; P = .002), infection by carbapenem-resistant bacteria (OR, 31.51; CI 4.01-247.25; P = .001), cancer (OR, 58.23; CI 4.54-746.27; P = .002), and treatment with adrenaline (OR, 13.14; CI 1.35-128.02; P = .003) continued to be significantly associated with death. CONCLUSIONS: Hospital sepsis secondary to carbapenem-resistant bacteria contributed to a high mortality rate in this cohort. Children with heart disease or neoplasia or who needed vasopressor drugs had poorer outcomes.

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Understanding the proportion of SARS-CoV-2 patients with Mycoplasmapneumoniae coinfection is crucial for treating patients suffering from coronavirus disease (COVID-19), help to ensure responsible use of antibiotics and minimize the negative consequences of overuse. In addition, this knowledge could have an impact on empirical antibiotic management guidelines for patients with COVID-19. This systematic review aimed to identify the prevalence of M. pneumoniae in patients with coronavirus disease 2019 (COVID-19). A bibliographic search of studies published in Spanish or English was conducted using the PubMed search engine. Fourteen articles from different continents (America, Asia and Europe) were included, involving a total of 5855 patients in these studies. The mean age of COVID-19 patients with M. pneumoniae was 48 years old (range 1-107), most of whom were male. The detection of laboratory-confirmed M. pneumoniae infection varied between 0 and 33.3%. Most of patients referred fever, cough, and dyspnea, and received empirical antibiotic treatment. Bacterial coinfection was not associated with increased ICU admission and mortality. The prevalence of coinfection showed extremely dissimilar figures according to the population studied and diagnostic criteria. However, it is important to develop Latin American studies, given the heterogeneity observed in the studies conducted in different countries. Standardized definitions should be developed in order to be able to assess the impact of coinfections in patients with a diagnosis of COVID-19.

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OBJECTIVE: To evaluate the effect of selective decontamination of the digestive tract (SDD) on hospital-acquired infections (HAIs) in patients with acute burn injury requiring admission to a Burns Unit (BU). DESIGN: Retrospective before-and-after cohort study, between January 2017 and June 2023. SDD was implemented in March 2019, dividing patients into two groups. SETTING: Four-bed BU, in a referral University Hospital in Spain. PATIENTS: All the patients admitted during the study period were eligible for analysis. Patients who died or were discharged within 48hours of admission, and patients with an estimated survival less than 10% not considered for full escalation of therapy were excluded. INTERVENTION: SDD comprised the administration of a 4-day course of an intravenous antibiotic, and an oral suspension and oral topical paste of non-absorbable antibiotics during the stay in the BU. MAIN VARIABLE OF INTEREST: Incidence of HAIs during the stay in the BU. SECONDARY OUTCOMES: incidence of specific types of infections by site (bacteremia, pneumonia, skin and soft tissue infection) and microorganism (Gram-positive, Gram-negative, fungi), and safety endpoints. RESULTS: We analyzed 72 patients: 27 did not receive SDD, and 45 received SDD. The number of patients who developed HAIs were 21 (77.8%) and 21 (46.7%) in the non-SDD and the SDD groups, respectively (p=0.009). The number of hospital-acquired infectious episodes were 2.52 (1.21-3.82) and 1.13 (0.54-1.73), respectively (p=0.029). CONCLUSIONS: SDD was associated with a reduced incidence of bacterial HAIs and a decrease in the number of infectious episodes per patient.

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INTRODUCTION: The management of infections in war wounds is a problem aggravated by the presence of multiresistant bacteria and requires a combined approach with surgery. Literature has identified the risks and patterns of antibiotic resistance in previous armed conflicts, but the Russian-Ukrainian conflict has required the study of specific bacterial resistance patterns. METHODS: We included war-injured patients from the Russian-Ukrainian conflict transferred for treatment to the General Defense Hospital of Zaragoza from May 2022 to October 2023. Epidemiological data, factors related to the injury, presence of infection and microbiological results were collected; These data were subsequently analyzed statistically. RESULTS: Fifty-three patients were included in the study, with a mean age of 35.6 years; 83% were injured by an explosive mechanism and all received antibiotic therapy prior to transfer. Seventeen patients had skin, soft tissue or joint infection. Correlation was demonstrated with the presence of bone lesion (p 0.03), skin coverage defect (p 0.000) and presence of foreign bodies (p 0.006). Nine patients had monomicrobial cultures, and the most frequently isolated microorganisms were Gram negative bacilli (GNB) and Staphylococcus aureus. Virtually all GNB presented some resistance mechanism. CONCLUSION: Our work shows the correlation of war wound infection with the presence of foreign bodies and affected tissues. Likewise, the presence of polymicrobial wounds is emphasized, with a predominance of GNB and multidrug-resistant S. aureus.

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Intravascular devices are essential for the diagnostic and therapeutic approach to multiple diseases in paediatrics, and central venous catheters (CVCs) are especially important. One of the most frequent complications is the infection of these devices, which is associated with a high morbidity and mortality. These infections are highly complex, requiring the use of substantial resources, both for their diagnosis and treatment, and affect vulnerable paediatric patients admitted to high-complexity units more frequently. There is less evidence on their management in paediatric patients compared to adults, and no consensus documents on the subject have been published in Spain. The objective of this document, developed jointly by the Spanish Society of Paediatric Infectious Diseases (SEIP) and the Spanish Society of Paediatric Intensive Care (SECIP), is to provide consensus recommendations based on the greatest degree of evidence available to optimize the diagnosis and treatment of catheter-related bloodstream infections (CRBSIs). This document focuses on non-neonatal paediatric patients with CRBSIs and does not address the prevention of these infections.

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El síndrome de Down, o trisomía 21, tiene una mortalidad mayor que la población general, debido principalmente a infecciones respiratorias. El objetivo de este trabajo es describir el compromiso inmunológico en una serie de casos de pacientes con síndrome de Down derivados a Inmunología por infecciones recurrentes o por hallazgo patológico de laboratorio, entre el 1 de junio de 2016 y el 31 de mayo de 2022. Se describe el compromiso de la inmunidad en 24 pacientes. Doce pacientes presentaron falla de respuesta a polisacáridos y recibieron quimioprofilaxis antibiótica y/o gammaglobulina sustitutiva. En 3 pacientes, se observó agammaglobulinemia con linfocitos B presentes y se indicó gammaglobulina sustitutiva. En 9 pacientes, se observó linfopenia T y en 1 paciente, compromiso inmune combinado.

Down syndrome, or trisomy 21, has a higher mortality than the general population, mainly due to respiratory tract infections. The objective of this study was to describe immune compromise in a series of cases of patients with Down syndrome referred to the Pediatric Immunology Section due to recurrent infections or pathological laboratory findings between 6/1/2016 and 5/31/2022. Here we describe immune compromise in 24 patients. Twelve patients failed to develop a polysaccharide response and received antibiotic chemoprophylaxis, or gamma globulin replacement therapy. Three patientsdeveloped agammaglobulinemia with presence of B cells and gamma globulin replacement therapy was indicated. Nine patients had T-cell lymphopenia and 1 patient, combined immune compromise.

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El parto prematuro (PP) es la principal causa de morbilidad/mortalidad perinatal en el mundo. La infección intrauterina es el origen más frecuente del PP espontáneo (PPE) en un hospital público de Chile. Existe evidencia de que la infección bacteriana ascendente (IBA) produce la infección/inflamación intraamniótica, el PPE y los resultados adversos maternos y perinatales. Esta revisión narrativa incluye revisiones sistemáticas y estudios de cohorte o de caso-control sobre la microbiota y el perfil inmunológico existente en el tracto genital inferior (TGI) de la embarazada propensa a PPE por IBA. Existe consenso en que en la microbiota del TGI de esta gestante hay colonización vaginal con baja abundancia de lactobacilos y/o disminución de su calidad, por diferencias raciales y/o geográficas o genéticas y una desregulación de los mecanismos inmunológicos del TGI. Estas respuestas se presentan con mayor intensidad en pacientes con factores de riesgo del huésped, como diabetes, obesidad, estrés, ansiedad y depresión, originando infecciones recurrentes del TGI, responsables del PPE y de los resultados perinatales. El conocimiento del comportamiento de la microbiota y del sistema inmunitario en estos casos permitirá tener terapias eficaces para prevenir el PPE y la morbilidad/mortalidad neonatal por IBA.

Preterm delivery (PD) is the leading cause of perinatal morbidity/mortality in the world. Intrauterine infection is the most frequent origin of spontaneous PD (SPD) in a public hospital in Chile. There is evidence that vaginal ascending bacterial infection (ABI) causes intra-amniotic infection/inflammation, SPD, and adverse maternal and perinatal outcomes. This narrative review includes systematic reviews and cohort or case-control studies on the microbiota and immunological profile existing in the lower genital tract (LGT) of pregnant women prone to SPD due to ABI. There is consensus that in the LGT microbiota of this pregnant woman there is vaginal colonization with low abundance of Lactobacilli and/or decreased quality, due to racial and/or geographic, or genetic differences and dysregulation of immunological mechanisms of the LGT. These responses occur with greater intensity in patients with host risk factors, such as diabetes, obesity, stress, anxiety, and depression, causing recurrent LGT infections responsible for SPD and perinatal outcomes. Knowledge of the behavior of the microbiota and the immune system in these cases will allow effective therapies to prevent SPD and neonatal morbidity/mortality due to ABI.

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Desde 2007, el Servicio de Epidemiología e Infectología, ha implementado un programa de transición que busca optimizar la atención de los adolescentes con infección por el HIV durante el paso de la atención pediátrica a la de adultos. Objetivo: Describir las características clínicas, epidemiológicas, virológicas y psicosociales de los adolescentes con infección HIV atendidos en el Programa y analizar el proceso de transición. Materiales y Métodos: Estudio de cohorte retrospectivo. Se incluyeron a los adolescentes, atendidos en el Programa de Transición entre enero de 2019 y diciembre de 2023, en el Hospital Garrahan, con al menos un resultado de CV y CD4+ en ese período. Se obtuvo la información de la historia clínica electrónica y se analizaron variables clínicas, epidemiológicas, virológicas, terapéuticas y psicosociales. Resultados: Se incluyeron 124 pacientes. La vía de transmisión fue vertical en el 92,74% y el estadio clínico e inmunológico era avanzado. En el momento de la transición 77,4% se encontraban con supresión virológica y con recuperación inmunológica. El 55,6% ya realizó la transición a un centro de adultos, 31,4% continúan en el programa, 11,3% se perdieron en el seguimiento y 1,7% fallecieron. Se recopilaron los datos de 31 pacientes transferidos. La mediana de seguimiento fue de 2 años; 25 pacientes (80,6%) continúan en seguimiento. Conclusiones: A pesar de la pandemia de COVID-19, el programa logró la retención de los adolescentes con infección por HIV y una transferencia sostenida en el tiempo. Además de un programa de transición estructurado para garantizar una atención continua y de calidad, es necesario continuar evaluando la evolución postransición (AU)

Since 2007, the Epidemiology and Infectious Diseases Department has implemented a transition program to optimize the care of adolescents with HIV infection during their transition from pediatric to adult care. Objective: To describe the clinical, epidemiological, virological, and psychosocial characteristics of adolescents with HIV infection treated in the program and to analyze the transition process. Materials and Methods: A retrospective cohort study was conducted. Adolescents followed in the Transition Program at Garrahan Hospital between January 2019 and December 2023, with at least one viral load and CD4+ result during that period, were included. Information was obtained from electronic medical records, and clinical, epidemiological, virological, therapeutic, and psychosocial variables were analyzed. Results: A total of 124 patients were included. The route of transmission was vertical in 92.74%, and the clinical and immunologic stage was advanced. At the time of transition, 77.4% were virologically suppressed and had achieved immunologic recovery. Of the patients, 55.6% had already transitioned to an adult center, 31.4% were still in the program, 11.3% were lost to follow-up, and 1.7% died. Data were collected from 31 transferred patients, with a median follow-up of 2 years; 25 patients (80.6%) remain in follow-up. Conclusions: Despite the COVID-19 pandemic, the program successfully retained HIVinfected adolescents and ensured sustained transition over time. In addition to a structured transition program to ensure continuous and quality care, it is necessary to continue evaluating post-transition outcomes (AU)

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Introducción Presentamos un paciente diagnosticado de narcolepsia de tipo 1 que desarrolló una encefalitis autoinmune posvacunal y/o tras una infección por el SARS-CoV-2. Caso clínico Paciente de 23 años que es remitido a urgencias por trastorno del lenguaje y temblor, acompañados de cefalea, trastorno del comportamiento, disfunción autonómica, crisis focal motora derecha y letargo. El paciente había sido vacunado siete semanas antes con la primera dosis de la vacuna Moderna (ARN mensajero) y, cuatro semanas después de la vacunación, presentó una infección por el SARS-CoV-2 con test de antígenos positivo. Resultados La exploración neurológica mostró un nivel de conciencia normal y una afasia mixta de predominio motor (campimetría, pares craneales, reflejos y sensibilidad normales). El test de reacción en cadena de la polimerasa para la COVID-19 fue negativo. En el líquido cefalorraquídeo se apreció una linfocitosis y proteínas elevadas. Los cultivos para hongos y bacterias fueron negativos. Los anticuerpos onconeuronales fueron normales. La resonancia magnética cerebral mostró en la secuencia de difusión una restricción con afectación cortical y morfología giral en el hemisferio cerebral izquierdo, y distribución parcheada con afectación de lóbulo frontal y temporal izquierdos. Una tomografía axial computarizada de tórax-abdomen-pelvis fue normal, al igual que las ecografías pélvica y escrotal. Al paciente se le trató con plasmaféresis y corticoides, con buena evolución clínica y resolución casi completa de las anomalías en la neuroimagen. Conclusión Se trata de un paciente con narcolepsia de tipo 1 con criterios de encefalitis autoinmune de comienzo subagudo. La infección por el SARS-CoV-2 o la vacunación, o ambas, constituyen un riesgo para desarrollar una o más enfermedades autoinmunes con la edad –como sucede en este caso–, lo que permite comprender la implicación de procesos inmunomediados en la fisiopatología de estas enfermedades. (AU)

INTRODUCTION We present a narcolepsy type 1 patient that develop an autoimmune encephalitis post vaccine and/or a SARS-CoV-2 infection.CASE REPORTAt 23 years old, the patient was referred to the emergency room with difficult speaking, headache and tremor followed by changes in behavior, autonomic dysfunction, right focal motor seizure and lethargy. He has received seven weeks before mRNA-1273 (Moderna) vaccine followed by a SARS-CoV-2 infection four weeks after vaccination (positive antigen test).RESULTSThe neurological examination was normal (visual fields, cranial nerves, motor, sensory and reflexes). Nasopharyngeal swab polymerase chain reaction (PCR) testing for COVID-19 was negative. Cerebrospinalfluid (CSF) had highly elevated protein and lymphocytic pleocytosis. CSF bacterial and fungal cultures for viral infections were negative. Brain magnetic resonance imaging (MRI) showed no abnormality on the non-enhanced sequences but the diffusion weighted imaging showed restricted diffusion with high signal on the left hemisphere mainly in the cerebral cortex with a gyro morphology, patched distribution with involvement of the temporal and frontal lobes. Chest, abdomen and pelvis computed tomography; pelvic and scrotum ultrasound, showed no malignancy. Onconeural antibodies were negative. The patient was treated with plasmapheresis and corticosteroids with a good clinical outcome and near complete resolution of the MRI abnormalities. CONCLUSION. The patient fulfilled the diagnostic criteria for autoimmune encephalitis with subacute onset. COVID-19 infection and vaccination could constitute a risk in a patient with narcolepsy as in this case and, could help to provide better understanding of the implication of immune-mediated processes in the pathophysiology of the diseases. (AU)

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INTRODUCTION AND OBJECTIVE: The care of patients with a suspected infectious process in hospital emergency departments (ED) accounts for 15%-35% of all daily care in these healthcare areas in Spain and Latin America. The early and adequate administration of antibiotic treatment (AB) and the immediate making of other diagnostic-therapeutic decisions have a direct impact on the survival of patients with severe bacterial infection. The main objective of this systematic review is to investigate the diagnostic accuracy of PCT to predict bacterial infection in adult patients treated with clinical suspicion of infection in the ED, as well as to analyze whether the different studies manage to identify a specific value of PCT as the most relevant from the diagnostic point of view of clinical decision that can be recommended for decision making in ED. METHOD: A systematic review is carried out following the PRISMA regulations in the database of PubMed, Web of Science, EMBASE, Lilacs, Cochrane, Epistemonikos, Tripdatabase and ClinicalTrials.gov from January 2005 to May 31, 2023 without language restriction and using a combination of MESH terms: "Procalcitonin", "Infection/Bacterial Infection/Sepsis", "Emergencies/Emergency/Emergency Department", "Adults" and "Diagnostic". Observational cohort studies (diagnostic performance analyses) were included. The Newcastle-Ottawa Scale (NOS) was used to assess the quality of the method used and the risk of bias of the included articles. Observational cohort studies were included. No meta-analysis techniques were performed, but results were compared narratively. RESULTS: A total of 1,323 articles were identified, of which 21 that met the inclusion criteria were finally analyzed. The studies include 10,333 patients with 4,856 bacterial infections (47%). Eight studies were rated as high, 9 as moderate, and 4 as low. The AUC-ROC of all studies ranges from 0.68 (95% CI: 0.61-0.72) to 0.99 (95% CI: 0.98-1). The value of PCT 0.2-0.3 ng/ml is the most used and proposed in up to twelve of the works included in this review whose average estimated performance is an AUC-ROC of 0.79. If only the results of the 5 high-quality studies using a cut-off point of 0.2-0.3 ng/ml PCT are taken into account, the estimated mean AUC-COR result is 0.78 with Se:69 % and Es:76%. CONCLUSIONS: PCT has considerable diagnostic accuracy for bacterial infection in patients treated in ED for different infectious processes. The cut-off point of 0.25 (0.2-0.3) ng/ml has been positioned as the most appropriate to predict the existence of bacterial infection and can be used to help reasonably rule it out.

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