Children with influenza admitted at a children's hospital in Argentina in the 2019-2022 period: What has changed after the COVID-19 pandemic?

Introduction. During 2020 and 2021, the circulation of influenza virus remained below expectations worldwide. In Argentina, in 2022, we observed an uninterrupted circulation of influenza all year round.

[Circulation dynamics of respiratory syncytial virus and its relationship with ambient temperature. 25-year series in Buenos Aires].

Objective: To evaluate changes in RSV seasonality in the last 25 years and their correlation with the mean annual temperature.

Methods: Cross-sectional study, based on RSV and temperature data from the City of Buenos Aires (1995-2019). For each year, we describe the beginning, end, and duration of the RSV season and the correlation with the mean annual temperature.

SARS-CoV-2 antibodies among health care workers from a children's hospital.

Introduction. In Argentina, health care workers have been the first ones to receive the COVID-19 vaccine, but there are still few data on the production of anti-S IgG antibodies. Objectives.

The return of RSV during the COVID-19 pandemic.

Respiratory syncytial virus (RSV) hospitalizations practically disappeared in 2020. Now, with Southern Hemisphere 2021 winter behind us, RSV has returned. Despite it is difficult to weigh the impact of pandemic mitigation measures on common respiratory virus circulation, it appears that acute respiratory infections in children are returning to their usual epidemiology.

[Seroprevalence of anti-Mycoplasma pneumoniae antibodies in otherwise healthy children].

Introduction: Mycoplasma pneumoniae (Mypn) infection could be occurring at an earlier age due to social pheno mena such as attending daycare centers more frequently and earlier than decades ago.

Objective: to estimate the prevalence of anti-Mypn antibodies in children aged 0-12 years, and to explore whether age, attendance to daycare center/school, overcrowding or the presence of children aged below 12 years in the households increase the risk of seropositivity.

Patients And Method: Cross-sectional stu dy including healthy children aged 0-12 years which required blood draws for routine laboratory tests.

Seasonality of respiratory syncytial virus in Buenos Aires. Relationship with global climate change.

Introduction: Global climate change circulation pattern respiratory syncytial virus (RSV). We assessed whether RSV season has changed over the past 20 years and its correlation with mean annual temperature.

Methods: Cross-sectional study that included records of RSV and temperatures from Buenos Aires (1995-2014).

[Inter-society consensus for the management of respiratory infections: acute bronchitis and chronic obstructive pulmonary disease].

The Argentine Society for Infectious Diseases and other national societies issued updated practical guidelines for the management of acute bronchitis (AB) and reactivations of chronic obstructive pulmonary disease (COPD) with the aim of promoting rational use of diagnostic and therapeutic resources. AB is a condition characterized by inflammation of the bronchial airways which affects adults and children without underlying pulmonary disease. It is usually caused by a virus.

[Consensus guidelines for the management of upper respiratory tract infections].

Upper respiratory tract infections are the most common source of antibiotic prescriptions. Acute pharyngitis is caused mainly by viruses, viral cases can be distinguished from acute streptococcal pharyngitis using Centor clinical epidemiological criteria, by rapid antigen tests or throat culture. Treatment of choice for streptococcal infection is penicillin V given in two daily doses.

[Validation of a simplified prediction rule to identify etiology in children with pneumonia].

Introduction: Identifying on admission those children with bacterial pneumonia could reduce inappropriate antibiotic use. The BPS (Bacterial Pneumonia Score) is a clinical prediction rule that accurately identifies children with bacterial pneumonia. Because the interpretation of chest X-ray included in this model could be considered difficult, a simplified version was developed, but this version has not yet been validated in a different population.

[Community-acquired methicillin-resistant Staphylococcus aureus infections in children: multicenter trial].

Introduction: Methicillin-resistant Staphylococcus aureus (MRSA) isolates are increasingly frequent causes of skin and soft-tissue infections or invasive infections in many communities. Local data are scarce.

Objective: To determine the frequency, clinical features and outcome of infections caused by MRSA.