IMMUNIZATION AGAINST VIRAL DISEASES.
D002140:California; D003906:Developing Countries; D006801:Humans; D007114:Immunization; D007223:Infant; D008297:Male; D008457:Measles; D011051:Poliomyelitis; D014611:Vaccination; D014777:Virus Diseases
CALIFORNIA; IMMUNIZATION; VIRUS DISEASES