From the Centers for Disease Control and Prevention. Influenza and pneumococcal vaccination levels among persons aged > or = 65 years--United States, 2001.
D000368:Aged; D040343:Behavioral Risk Factor Surveillance System; D005260:Female; D015438:Health Behavior; D006801:Humans; D007252:Influenza Vaccines; D008297:Male; D022242:Pneumococcal Vaccines; D012959:Socioeconomic Factors; D014481:United States / Q000453:epidemiology; D014611:Vaccination / Q000706:statistics & numerical data*
D007252:Influenza Vaccines; D022242:Pneumococcal Vaccines