Background Reliable estimates of the effectiveness of influenza vaccine among persons 65
years of age and older are important for informed vaccination policies and programs. Short-…

BACKGROUND: Anterior cruciate ligament (ACL) tears are thought to occur with increasing
frequency in young patients. No study has shown increased incidence over time. We …

Importance The COVID-19 pandemic has affected routine vaccine delivery in the US and
globally. The magnitude of these disruptions and their association with childhood vaccination …

Importance In 2010, due to a pertussis outbreak and neonatal deaths, the California Department
of Health recommended that the tetanus toxoid, reduced diphtheria toxoid, and acellular …

OBJECTIVE: The goal of this study was to determine changes in antibiotic-dispensing rates
among children in 3 health plans located in New England [A], the Mountain West [B], and the …

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 1990, VSD …

Objectives To examine patterns and trends of undervaccination in children aged 2 to 24
months and to compare health care utilization rates between undervaccinated and age-…

PURPOSE Many clinical preventive care services are recommended for adolescents. Little
is known about whether most adolescents have a sufficient number of preventive care …

Background This study evaluated the utility of immunization registries in identifying vaccine
refusals among children. Among refusers, we studied their socioeconomic characteristics …

BACKGROUND: The emergence of pandemic H1N1 influenza virus in early 2009 prompted
the rapid licensure and use of H1N1 monovalent inactivated (MIV) and live, attenuated (…