It has been assumed that the COVID-19 vaccination reduces the risk of transmission to
others. Results during the delta predominance show that the viral load in the vaccinated …

Background Viral shedding and neutralizing antibody (NAb) dynamics among patients
hospitalized with severe coronavirus disease 2019 (COVID-19) and immune correlates of …

Background The impact of infection-induced immunity on severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) transmission has not been well established. Here we estimate …

The protective effect of COVID-19 vaccination for contact persons is controversial. Therefore,
the aim of this review was to determine whether COVID-19 vaccination provides significant …

Background Understanding the impact of infection-induced immunity on SARS-CoV-2
transmission will provide insight into the transition of SARS-CoV-2 to endemicity. Here we …

We conducted a longitudinal cohort study of SARS-CoV-2 and influenza rates in childcare
centers and schools in Wuxi, China, collecting 1,760 environmental samples and 9,214 …

Background While numerous studies have evaluated the real-world performance of rapid
antigen tests (RATs), data on the effect of Omicron sublineages such as XBB and …

Backgound/Objectives: Cycle threshold (Ct) values of SARS-CoV-2 real-time reverse
transcriptase-polymerase chain reaction (RT-PCR) tests are associated with infectivity and …

Background: The impact of infection-induced immunity on SARS-CoV-2 transmission has
not been well established. Here we estimate the effects of prior infection induced immunity in …

The epidemiology of human coronaviruses (HCoV) is not well understood, particularly
among children. The emergence of SARS-CoV-2 and the resulting, ongoing global …