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In December 2019, a cluster of fatal pneumonia cases presented in Wuhan, China. They were caused by a previously unknown coronavirus. All patients had been associated with the Wuhan Wholefood market, where seafood and live animals are sold. The virus…

Abstract Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an ongoing global health emergency. Here we highlight nine most important research questions concerning virus transmission,…

SARS-CoV-2 is the agent responsible for the coronavirus disease (COVID-19), which has been declared a pandemic by the World Health Organization. The clinical evolution of COVID-19 ranges from asymptomatic infection to death. Older people and patients…

Severe acute respiratory syndrome virus 2 was initially identified in the Chinese city Wuhan on 29 December 2019. The infection hasrapidly spread all over the world, and the World Health Organization declared the infection a pandemic on 11 March…

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Rosario Gulias-Cañizo,1 Estela D’Abril Ruíz-Leyja,2 Valeria Sánchez-Huerta,2 Lenin Ochoa-de la Paz2,3 1Facultad de Ciencias de la Salud, Universidad Anáhuac México, Huixquilucan, Edo. de México,…

(1) Background: Detection of asymptomatic or subclinical human coronavirus SARS-CoV-2 infection in healthcare workers (HCWs) is crucial for understanding the overall prevalence of the new coronavirus and its infection potential in public…

Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been documented, raising public health concerns. SARS-CoV-2 reinfections were assessed in a cohort of antibody-positive persons in Qatar. All SARS-CoV-2…