The COVID-19 pandemic has infected millions of people worldwide and many countries
have been suffering from a large number of deaths. Acknowledging the ability of SARS-CoV …

Background With the continuation of the COVID-19 pandemic, some COVID-19 patients
have become reinfected with the virus. Viral gene sequencing has found that some of these …

BACKGROUND There is recently a concern regarding the reinfection and reactivation of
previously reCoVered coronavirus disease 2019 (CoVID-19) patients. AIM To summarize …

Background Reinfection with the severe acute respiratory syndrome coronavirus 2 (SARS-
CoV-2) has been documented, raising public health concerns. Risk and incidence rate of …

Background As the COVID-19 pandemic rages on, reports on disparities in vaccine roll out
alongside COVID-19 reinfection have been emerging. We conducted a systematic review to …

Background Waning immunity occurs in patients who have recovered from Coronavirus
Disease 2019 (COVID-19). However, it remains unclear whether true re-infection occurs …

Objectives To estimate the burden and severity of suspected reinfection with severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2). Methods A retrospective cohort of …

Abstract Background In December 2019, severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) emerged with a high transmissibility rate and resulted in numerous negative …

Background The degree of protective immunity conferred by infection with severe acute
respiratory syndrome coronavirus 2 (SARS-CoV-2) is currently unknown. As such, the …

ABSTRACT SARS-CoV-2 reinfection rate is low. The relative severity of the first and second
episodes of infection remains poorly studied. In this study, we aimed at assessing the …