In late December 2019, the first cases of viral pneumonia caused by an unidentified
pathogen were reported in China. Two years later, SARS-CoV-2 was responsible for almost …

Nursing homes have accounted for a significant part of SARS-CoV-2 mortality, causing great
social alarm. Using data collected from electronic medical records of 1,319,839 …

Background The global burden of influenza is substantial. It is a major disease that causes
annual epidemics and occasionally, pandemics. Given that influenza primarily infects the …

Background Disease surveillance using adequate case definitions is very important. The
objective of the study was to compare the performance of influenza case definitions and …

Background Influenza is a major global burden of disease, causing annual epidemics and
occasionally, pandemics. Given that influenza primarily infects the upper respiratory system …

Introducción La gripe es una de las enfermedades de mayor impacto epidemiológico y de
máxima relevancia en la gestión de los servicios sanitarios. La vacuna de la gripe puede …

Background: The first reported COVID-19 case in Arkansas was on 11 March 2020, two
months after the first reported case in the United States. We sought to analyze rates of …

Background Clinical findings do not accurately predict laboratory diagnosis of influenza.
Early identification of influenza is considered useful for proper management decisions in …

Background: Influenza causes substantial morbidity and mortality. Novel strains from
animals can infect humans, but such transmission is poorly understood. Serosurveillance …

Patients with signs and symptoms of influenza should be queried regarding exposure to
birds; in the setting of relevant epidemiologic criteria, evaluation for avian influenza may also …