Pediatric hospitalizations associated with 2009 pandemic influenza A (H1N1) in Argentina.

BACKGROUND: While the Northern Hemisphere experiences the effects of the 2009 pandemic influenza A (H1N1) virus, data from the recent influenza season in the Southern Hemisphere can provide important information on the burden of disease in children. METHODS: We conducted a retrospective case series involving children with acute infection of the lower respiratory tract or fever in whom 2009 H1N1 influenza was diagnosed on reverse-transcriptase polymerase-chain-reaction assay and who were admitted to one of six pediatric hospitals serving a catchment area of 1.2 million children. We compared rates of admission and death with those among age-matched children who had been infected with seasonal influenza strains in previous years. RESULTS: Between May and July 2009, a total of 251 children were hospitalized with 2009 H1N1 influenza. Rates of hospitalization were double those for seasonal influenza in 2008. Of the children who were hospitalized, 47 (19%) were admitted to an intensive care unit, 42 (17%) required mechanical ventilation, and 13 (5%) died. The overall rate of death was 1.1 per 100,000 children, as compared with 0.1 per 100,000 children for seasonal influenza in 2007. (No pediatric deaths associated with seasonal influenza were reported in 2008.) Most deaths were caused by refractory hypoxemia in infants under 1 year of age (death rate, 7.6 per 100,000). CONCLUSIONS: Pandemic 2009 H1N1 influenza was associated with pediatric death rates that were 10 times the rates for seasonal influenza in previous years.

[Out-of-hospital care setting in a Febrile Emergency Unit of suspected Covid 19 patients]. / Atención extrahospitalaria en una Unidad Febril de Urgencia de pacientes sospechosos de Covid 19.

INTRODUCTION: In 2019, a new infection was reported in China. This coronavirus was named SARS-COV-2, causative of the 21st-century pandemic, COVID-19. Health systems adopted different strategies to cope with it. OBJECTIVE: to describe the clinical-epidemiological characteristics of COVID-19 in children seen at an Emergency Febril Unit (UFU). PATIENTS AND METHOD: Cross-sectional study in patients under 18 years of age tested for SARS-COV-2 between April 1 and June 30, 2020. All epidemiological re cords made at the time of consultation and the result of the Polymerase Chain Reaction (PCR) test of these patients, either by suspicion of COVID-19 or epidemiological isolation criteria, were inclu ded. Patients whose samples had been taken for SARS-COV-2 determination outside the initial time of consultation or whose epidemiological records were incomplete or did not meet the established inclusion criteria were excluded. The diagnosis of COVID-19 was made using the PCR technique for SARS-COV-2 in nasopharyngeal secretions obtained by nasopharyngeal swab or aspirate. The following variables were recorded: age, gender, place of residence, history of close contact, history of history of close contacts, travel history and comorbidities, history of institutionalization and PCR result. RESULTS: 1,104 patients were admitted to the UFU and tested due to suspected COVID-19. 152 patients had to be excluded due to insufficient data. Of the 952 patients tested, 22.6% had a detec table result, and 71.2% of them reported close contact with confirmed cases. The mean age was 5.9 years. The 55.4% were male and 99.3% lived in the Metropolitan Area of Buenos Aires. 72.8% of the patients tested had symptoms. The time of delay in consultation was 2.17 days. 25% of the children had comorbidities. CONCLUSIONS: The availability of the UFU facilitated access and optimized the care circuit in response to demand. Children with a history of close contact and those symptomatic showed more frequently a detectable result for SARS-COV-2.