This longitudinal prospective controlled multicenter study aimed to monitor immunity
generated by three exposures caused by breakthrough infections (BTI) after COVID‐19 …

We evaluated and compared humoral immune responses after inactivated coronavirus
disease 2019 (COVID‐19) vaccination among naïve individuals, asymptomatically infected …

Currently, the majority of the population has been vaccinated against COVID‐19 and/or has
experienced SARS‐CoV‐2 infection either before or after vaccination. The immunological …

Despite recent advances in prophylactic vaccination, SARS‐CoV‐2 infections continue to
cause significant morbidity. A better understanding of immune response differences …

Background: Vaccine-induced SARS-CoV-2-anti-spike antibody (anti-S/RBD) titers are often
used as a marker of immune protection and to anticipate the risk of breakthrough infections …

SARS-CoV-2 variants of concern (VOCs) can trigger severe endemic waves and vaccine
breakthrough infections (VBI). We analyzed the cellular and humoral immune response in 8 …

Accumulating evidence shows a progressive decline in the efficacy of coronavirus disease
2019 (COVID‐19)(severe acute respiratory syndrome coronavirus 2 [SARS‐CoV‐2]) …

Individuals with a recent common cold coronavirus infection, which leads to pre‐existing
immunity against SARS‐CoV‐2, displayed a less severe course of COVID‐19. However, the …

Background SARS-CoV-2 vaccination has proven the most effective measure to control the
COVID-19 pandemic. Booster doses are being administered with limited knowledge on their …

Understanding vaccine-mediated protection against severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2) is critical to overcoming the global coronavirus disease 2019 …