The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 2019
prompted scientific, medical, and biotech communities to investigate infection-and vaccine …

Three and a half years into the coronavirus disease 2019 (COVID-19) pandemic, the nature
and durability of protection against severe acute respiratory syndrome coronavirus 2 (SARS …

BACKGROUND There is uncertainty about the timing of booster vaccination against COVID-
19 in highly vaccinated populations during the present endemic phase of COVID-19. Studies …

Background Improved coronavirus disease 2019 (COVID-19) prevention is needed for
immunocompromised individuals. Methods A prospective study was performed of health …

Introduction The duration and timing of immunity conferred by COVID-19 vaccination in sub-
Saharan Africa are crucial for guiding pandemic policy interventions, but systematic data for …

Post-vaccination infections, termed breakthrough infections, occur after the virus infection
overcomes the vaccine-induced immune barrier. During the early stages of the severe acute …

Data on immune responses following COVID-19 booster vaccinations and subsequent
infections in the immunocompromised are limited. We studied antibody responses after the …

The rapid emergence of evasive SARS-CoV-2 variants is an ongoing challenge for COVID-
19 vaccinology. Traditional virus neutralization tests provide detailed datasets of …

Numerous studies have largely focused on short-term immunogenicity in recovered
individuals post mRNA vaccination. However, understanding the long-term durability …

Background The impact of the infecting SARS-CoV-2 variant of concern (VOC) and the
vaccination status was determined on the magnitude, breadth, and durability of the …