Introduction Estimating COVID-19 cumulative incidence in Africa remains problematic due to
challenges in contact tracing, routine surveillance systems and laboratory testing capacities …

In late 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) triggered the
global coronavirus disease 2019 (COVID-19) pandemic. Although most infections cause a …

Large-scale vaccination campaigns have prevented countless hospitalizations and deaths
due to COVID-19. However, the emergence of SARS-CoV-2 variants that escape from …

The availability of three COVID-19 vaccines in the United States provides an unprecedented
opportunity to examine how vaccine platforms and timing of vaccination in pregnancy impact …

Group 2B β-coronaviruses (sarbecoviruses) have caused regional and global epidemics in
modern history. Here, we evaluate the mechanisms of cross-sarbecovirus protective …

Large-scale vaccination campaigns have prevented countless SARS-CoV-2 infections,
hospitalizations and deaths. However, the emergence of variants that escape from immunity …

Delineating the origins and properties of antibodies elicited by SARS-CoV-2 infection and
vaccination is critical for understanding their benefits and potential shortcomings. Therefore …

Background Male sex and old age are risk factors for severe coronavirus disease 2019, but
the intersection of sex and aging on antibody responses to severe acute respiratory …

It is important to determine if severe acute respiratory syndrome coronavirus 2 (SARS-CoV-
2) infections and SARS-CoV-2 mRNA vaccinations elicit different types of antibodies. Here …

Existing assays to measure antibody cross-reactivity against different SARS-CoV-2 spike (S)
protein variants lack the discriminatory power to provide insights at the level of individual …