Pediatric Infectious Disease Journal最新文献

Background: Postexposure prophylaxis (PEP) is critical in preventing HIV acquisition after risky exposures, particularly in pediatric sexual assault victims. Despite its importance, adherence and follow-up remain significant challenges.

Objectives: This study evaluates PEP and follow-up adherence and efficacy among pediatric sexual assault victims treated at a tertiary care hospital in Turkey.

Methods: A retrospective analysis was conducted on 119 pediatric patients 1 month to 18 years of age, treated between September 2017 and September 2022. Data were collected on demographics, PEP initiation and completion, follow-up rates and serologic testing for HIV. PEP compliance, follow-up adherence and outcomes were analyzed.

Results: PEP was initiated in 97% of the eligible 119 patients, with 70% completing the regimen. Compliance showed no significant differences by sex or age. Follow-up adherence decreased progressively, from 55% at the first month to 30% by the sixth month. Nausea and vomiting occurred in one case, indicating a low incidence of side effects. None of the patients seroconverted to HIV.

Conclusion: A structured care system involving multidisciplinary collaboration, pioneered by pediatric infectious diseases, can lead to high PEP initiation and completion rates in children. Single-pill PEP regimens may enhance adherence. However, the decline in follow-up rates underscores the need for improved follow-up mechanisms and future interventions.

Background: Human Adenovirus (HAdV) is a common cause of acute respiratory infections, typically mild in healthy individuals. However, in late 2022, an outbreak of severe acute respiratory infection caused by HAdV emerged among children in Colombia and other countries.

Methods: We described an HAdV outbreak between February 2022 and April 2023. Children with severe acute respiratory infection and HAdV infection confirmed by polymerase chain reaction were included in 4 institutions in Antioquia, Colombia. Our study investigated the clinical manifestations and circulating HAdV genotypes before, during and after this HAdV outbreak.

Results: A total of 133 HAdV cases were analyzed, 37 (27.8%) cases were classified as the preoutbreak group, 88 (66.1%) as the outbreak and 8 (6.0%) as the postoutbreak group. Predominant symptoms were fever (87.0%), rhinorrhea (57.1%) and dyspnea (36.8%). The need for intensive care unit admission and supplemental oxygen increased during the outbreak and peaked in the postoutbreak period. Phylogenetic analysis revealed that 71.4% (10/14) of preoutbreak sequences belonged to genotype HAdV-C89, while during the outbreak, 75.6% (28/37) were HAdV-B3. Clinical symptoms did not significantly differ between HAdV-C89 and HAdV-B3 infections, but children infected with HAdV-B3 were significantly older.

Conclusions: This study highlights the shifting dynamics of HAdV genotypes in children and their epidemiologic impact. The emergence of HAdV-B3 in the post-COVID-19 period contributed to a severe acute respiratory infection outbreak, emphasizing the need for ongoing surveillance.

Background: Visceral Leishmaniasis is a systemic vector-borne infection with a poor prognosis if not treated. Classical antiparasitic therapy with liposomal amphotericin B (LAmB) is effective, but occasionally not well-tolerated.

Case presentation: An 11-month-old male infant was admitted to our hospital due to prolonged fever, following an RSV infection. The patient had pale skin and splenomegaly, but was hemodynamically stable. An infectious cause was investigated through serology for Leishmania species , Brucella melitensis , Toxoplasma gondii , EBV, CMV, PB19 and Salmonella species . After admission, the infant developed Hemophagocytic lymphohistiocytosis (HLH, with pancytopenia, triglycerides: 346 U/L, ferritin: 1071 ng/mL; γ-globulin was administered without clinical response). On the second hospitalization day, the Leishmania rapid test was positive, while blood polymerase chain reaction identified Leishmania Infantum as the cause of infection, and LAmB was initiated. After the 4th dose, the patient developed hypokalemia, bradycardia and premature supraventricular complexes. The arrhythmia persisted despite electrolyte replacement; amphotericin-induced cardiotoxicity was suspected, and LAmB was discontinued. Oral miltefosine was started after approval by the National Public Health Organization, since the medicine was given in Greece for the first time to a pediatric patient. Miltefosine therapy lasted 1 month, with remission. Hepatotoxicity occurred at the end of the treatment and gradually resolved over the following 4 months with complete normalization of hepatic markers. The child remained asymptomatic at the 1-year follow-up.

Conclusions: Leishmaniasis should always be investigated in pediatric patients with secondary HLH, especially in endemic countries. Cardiotoxicity of LAmB is extremely rare; in this case, however, miltefosine is an effective and safe alternative.

Background: Identifying the cause of infection is important for clinical management and public health decisions, including vaccination strategies. In low-resource settings, causes of fever are often not identified. In this study, molecular testing panels were used to identify the causes of pediatric fever in the Kathmandu Valley, Nepal. A dengue fever outbreak facilitated the investigation of dengue diagnostics.

Methods: Children under 14 years of age were recruited to this prospective cohort study at Patan Hospital, Nepal. Clinical data and routine diagnostics were used to classify cases, including nonstructural protein 1 (NS1) antigen testing for dengue. Additional molecular diagnostics were performed on blood (12 viral, 26 bacterial and 6 fungal targets) and respiratory samples (17 viral and 3 bacterial targets).

Results: From September 1, 2021, to April 19, 2023, 565 children were enrolled, median age 3 (interquartile-range 1-7) years. Pathogens identified included dengue virus (n = 101), respiratory syncytial virus (n = 30), influenza (n = 25), typhoidal Salmonella spp. (n = 7) and Neisseria meningitidis (n = 2). During the dengue outbreak, dengue polymerase chain reaction (PCR) and NS1 positivity rates were both high early in dengue disease, but if >3 days of symptoms, PCR positivity rates declined (10.3%) while NS1 positivity remained high into the second week of illness (80%).

Conclusions: This prospective cohort study is the most comprehensive effort to date to describe the causes of pediatric fever in the Kathmandu Valley, Nepal. The United States Centers for Disease Control and Prevention recommends dengue PCR or NS1 antigen testing during the first 7 days of dengue fever. Our data indicate that PCR positivity declines after 3 days of symptoms, resulting in missed cases when relying solely on PCR.

Background: Cryptococcal meningitis (CM) is associated with high mortality and neurodevelopmental sequelae and predominantly affects people living with HIV. Screening and pre-emptive treatment for cryptococcal antigen (CrAg) in blood in adults with CD4 <200 cells/µL reduces mortality. The World Health Organization does not recommend screening children <10 years due to a presumed low prevalence of CM. Nevertheless, CrAg testing is performed for all ages in South Africa in those with CD4 <100 cells/µL.

Methods: Children (<18 years) with CD4 <100 cells/µL and a CrAg screening result were identified from National Health Laboratory Service records from 2017 to 2022 in South Africa. Fifteen healthcare facilities in Gauteng province were chosen for a convenience sample of CrAg-positive and matched CrAg-negative children to collect detailed clinical information.

Results: Prevalence of cryptococcal antigenemia in South African children <18 years was 4.7% (1352/28,839) with a median age of 14 years (IQR 11-16). CrAg-positive prevalence in children <10 years was 3.5% (261/7440). Fifty-one CrAg-positive children were included for in-depth chart review. Twenty-four (24/49; 49%) CrAg-positive children had documented symptoms of meningitis at testing; 33% were diagnosed with CM. Forty-seven percent (8/17) of CrAg-positive children without documented symptoms developed their first CM episode in the subsequent 12 months. Five percent (1/19) of CrAg-positive children pre-emptively treated with fluconazole were subsequently diagnosed with CM, compared with 58% (7/12) of those without a documented prescription (P = 0.002). The 6-month mortality for CrAg-positive children was 19% (7/36). No CrAg-negative children developed CM.

Conclusions: CrAg prevalence in children with CD4 <100 cells/µL is comparable to adults (4.7% and 5.8%, respectively). CrAg screening guidelines should be extended to include all children to improve outcomes.