Long-term control of SARS-CoV-2 requires effective vaccination strategies. This has been
challenged by public mistrust and the spread of misinformation regarding vaccine safety …

Two mRNA COVID-19 vaccines (mRNA-1273, Moderna; and BNT162b2, Pfizer-BioNTech)
and one viral vector vaccine (JNJ-78436735, Janssen/Johnson and Johnson) are …

Background The rapid authorization and widespread rollout of COVID-19 vaccines in the
United States demonstrated a need for additional data on vaccine side effects, both to …

Importance Uptake of vaccination against COVID-19 is strongly affected by concerns about
adverse effects. Research on nocebo effects suggests that these concerns can amplify …

Importance Little is known about the factors associated with COVID-19 vaccine adverse
effects in a real-world population. Objective To evaluate factors potentially associated with …

Short-term adverse events are common following the BNT162b2 vaccine for SARS-Cov-2
and have been possibly associated with IgG response. We aimed to determine the …

Background Evidence-based reassurances addressing vaccine-related concerns are crucial
to promoting primary vaccination, completion of the primary series, and booster vaccination …

In all pivotal trials of COVID-19 vaccines, the history of previous SARS-CoV-2 infection was
mentioned as one of the main exclusion criteria. In the absence of clinical trials …

Background The comparative safety profile of SARS-Cov2 vaccines requires further
characterization in real-world settings. Objectives The aim of the VigilVacCOVID study was …

Importance Evidence is needed to determine COVID-19 vaccine effectiveness under real-
world conditions of use. Objective To determine the effectiveness of authorized vaccines …