A PROVISIONAL TOTAL of 513 confirmed cases of measles was reported from Los Angeles County during 1988. The Los Angeles County cases represent 17.5% of all (2933) cases reported for the United States during this period and an incidence rate of 6.4 cases/ 100,000 persons—a risk 5.3 times higher than that in the rest of the United States (1.2/100,000). In early 1988, schoolaged children and adults were predominantly affected. However, in May, both the number and proportion of cases reported among children less than 5 years of age increased, prompting a more intense investigation. The following analysis is based on the provisional total of 355 persons with confirmed cases having onset from May 1 to December 31.
Of 353 confirmed patients with known ages and onset from May 1 to December 31, 228 (64.6%) were less than 5 years of age. A total of 135 (38.2%) were less than 16
Measles—Los Angeles County, California, 1988. Arch Dermatol. 1989;125(4):471-472. doi:10.1001/archderm.1989.01670160019002