Naval Health Research Center, San Diego, California 92186-5122, USA. strickler@nhrc.navy.mil
Abstract:
Virtually all US military basic trainees receive seasonal influenza vaccine. Surveillance data collected from December 2005 through March 2006 were evaluated to estimate effectiveness of the influenza vaccine at 6 US military basic training centers. Vaccine effectiveness against laboratory-confirmed influenza was 92% (95% confidence interval 85%-96%).