In this review, we systematically searched and summarized the evidence on the immune
response and reinfection rate following SARS‐CoV‐2 infection. We also retrieved studies on …

Present study aimed to estimate the incidence of recurrent SARS-CoV-2 RNA positivity after
recovery from COVID-19 and to determine the factors associated with recurrent positivity. We …

Prolonged detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
RNA and recurrence of PCR-positive tests have been widely reported in patients after …

Abstract “Retest Positive” for severe acute respiratory syndrome‐related coronavirus‐2
(SARS‐CoV‐2) from “recovered” coronavirus disease‐19 (COVID‐19) has been reported …

Background There is growing concern about individuals reported to suffer repeat COVID-19
disease episodes, these in a small number of cases characterised as de novo infections with …

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been redetected after
discharge in some coronavirus disease 2019 (COVID-19) patients. The reason for the …

Summary Prolonged SARS-CoV-2 RNA shedding and recurrence of PCR-positive tests
have been widely reported in patients after recovery, yet these patients most commonly are …

This study aims to estimate the prevalence and longevity of detectable SARS-CoV-2
antibodies and T and B memory cells after recovery. In addition, the prevalence of COVID-19 …

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 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 …