CDC releases HIV guidelines.
D000575:American Nurses' Association; D002487:Centers for Disease Control and Prevention, U.S.; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006280:Health Workforce; D006509:Hepatitis B / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D012307:Risk Factors; D014481:United States