Background The consequences of influenza in adults are mainly time off work. Vaccination
of pregnant women is recommended internationally. This is an update of a review published …

Abstract The Vaccine Safety Datalink (VSD) is a collaborative project between the Centers
for Disease Control and Prevention (CDC) and 9 health care organizations. Established in …

Importance Safety surveillance of vaccines against COVID-19 is critical to ensure safety,
maintain trust, and inform policy. Objectives To monitor 23 serious outcomes weekly, using …

Importance Postauthorization monitoring of vaccines in a large population may detect rare
adverse events not identified in clinical trials such as Guillain-Barré syndrome (GBS), which …

Application and interpretation of statistical evaluation of relationships is a necessary element
in biomedical research. Statistical analyses rely on P value to demonstrate relationships …

Background Routine immunization, one of the most effective public health interventions, has
effectively reduced death and morbidity due to a variety of infectious diseases. However …

Background International postlicensure studies have identified an increased risk of
intussusception after vaccination with the second-generation rotavirus vaccines RotaTeq …

Background—The rate of hospitalization for venous thromboembolism (VTE) is increasing in
the United States. Although predictors of hospital-acquired VTE are well-known, triggers of …

Summary Background The influenza A (H1N1) 2009 monovalent vaccination programme
was the largest mass vaccination initiative in recent US history. Commensurate with the size …

Background Although current rotavirus vaccines were not associated with an increased risk
of intussusception in large trials before licensure, recent postlicensure data from …