Monitoring HIV prevalence in blood donations in Europe.
D001782:Blood Donors / Q000706:statistics & numerical data*; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005060:Europe / Q000453:epidemiology; D015658:HIV Infections / Q000453:epidemiology*; D006801:Humans; D011159:Population Surveillance; D015995:Prevalence; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors