Background: From the start of the COVID-19 pandemic, new SARS-CoV-2 variants have
emerged that potentially affect transmissibility, severity, and immune evasion in infected …

Highlights What are the main findings? This comprehensive analysis meticulously examined
51 studies, pinpointing 27 that rigorously adhered to stringent criteria. The incorporation of …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and seasonal influenza
viruses are cocirculating in the human population. However, only a few cases of viral …

Reinfection with SARS-CoV-2 seems to be a rare phenomenon. The objective of this study is
to carry out a systematic search of literature on the SARS-CoV-2 reinfection in order to …

Background The COVID-19 pandemic has had a devastating impact on the world over the
past two years (2020-2021). One of the key questions about its future trajectory is the …

Since its declaration as a pandemic in March 2020, SARS-CoV-2 has infected more than
217 million people worldwide and despite mild disease in the majority of the cases, more …

BACKGROUND: The study was conducted in response to the need to understand the
incidence of SARS-CoV2 infection and its determinants in healthcare workers (HCWs) and …

Abstract Background Reinfection by SARS-CoV-2 is a rare but possible event. We evaluated
the prevalence of reinfections in the Province of Modena and performed an overview of …

Introduction: With the increasing rate of COVID-19, particularly in develo** countries such
as Iran, a high number of frontline service providers, including doctors and nurses, have …

Objetivo: estimar la concordancia de la prueba de antígenos rápida (PAR) para SARS-CoV-
2 y la prueba de reacción en cadena de la polimerasa cuantitativa con transcripción inversa …