From the Centers for Disease Control and Prevention. Health Information for International Travel 1995.
D017088:AIDS-Related Opportunistic Infections / Q000517:prevention & control*; D003906:Developing Countries; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D010353:Patient Education as Topic; D012307:Risk Factors; D014195:Travel; D014611:Vaccination