CDC updates guidelines for influenza control.
D002487:Centers for Disease Control and Prevention, U.S.; D006287:Health Planning Guidelines; D006801:Humans; D007252:Influenza Vaccines / Q000627:therapeutic use*; D007251:Influenza, Human / Q000517:prevention & control*; D012307:Risk Factors; D014481:United States
D007252:Influenza Vaccines