From the Centers for Disease control and Prevention. Effectiveness of a middle school vaccination law--California, 1999-2001.
D000293:Adolescent; D002140:California; D002648:Child; D006801:Humans; D012574:Schools / Q000331:legislation & jurisprudence* / Q000592:standards; D013219:State Government; D014611:Vaccination / Q000331:legislation & jurisprudence* / Q000592:standards