Successful strategies in adult immunization.

Safe and effective vaccines are available to prevent pneumococcal disease and influenza and hepatitis B virus (HBV) infections among persons in the United States; however, a substantial number of adults at increased risk for these preventable infections remain unvaccinated. This report describes collaborative public and private efforts to increase the vaccination of adults and highlights National Adult Immunization Awareness Week, October 27-November 2, 1991.