Prevention of infections with type A hepatitis virus.
D002648:Child; D005516:Food Microbiology; D006506:Hepatitis A / Q000517:prevention & control*; D006801:Humans; D007114:Immunization; D011790:Quarantine; D012572:School Health Services; D014871:Water Microbiology; D005719:gamma-Globulins
D005719:gamma-Globulins