Measles in a partially immunized community.
During the investigation of a measles outbreak in a rural community, a spectrum of illness was observed which ranged in severity from a brief febrile illness to one characteristic of typical measles. Unimmunized children were more apt to develop measles (p less than 0.001) than were immunized children. However, a proportion of both the immunized and unimmunized children developed a milder, "measles-associated," illness. Employing a logistic model, it was demonstrated that the probability of developing either measles or "measles-associated" illness decreased with increasing age at immunization but was not affected by the interval since immunization.
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D007114:Immunization; D007484:Iowa; D008457:Measles / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D011336:Probability; D013997:Time Factors