وهناك نسبة كبيرة من سكان لاو معرضة للملاريا، وقد شهدت أوائل تسعينات القرن الماضي زيادة في معدل الاعتلال.
HIV prevalence in the general population in Lao PDR remains low, but varies considerably between risk groups and locations. While knowledge of disease transmission is high, there is still a big gap between knowledge and desired behaviors.