Control of infectious diseases.
D001102:Arbovirus Infections / Q000517:prevention & control; D002644:Chickenpox / Q000517:prevention & control; D003140:Communicable Disease Control; D006801:Humans; D011528:Protozoan Infections / Q000517:prevention & control; D012141:Respiratory Tract Infections / Q000517:prevention & control; D014141:Trachoma / Q000517:prevention & control; D014777:Virus Diseases / Q000517:prevention & control