IN 1988, a provisional total of 3411 measles cases was reported to the Division of Immunization, Center for Prevention Services, CDC, 7% less than the 3652 cases reported during the same period in 1987.1 The overall incidence rate for 1988 was 1.4 cases per 100,000 population. Nine states reported greater than or equal to 100 cases and accounted for 2802 (82.1%) cases: California (836), Pennsylvania (542), New Jersey (402), Texas (287), Virginia (239), Florida (170), Colorado (117), Ohio (109), and New Hampshire (100). Seven states had incidence rates greater than 2.0 per 100,000 population: Montana (10.7), New Hampshire (9.2), New Jersey (5.2), Pennsylvania (4.5), Virginia (4.0), Colorado (3.5), and California (3.0). Thirty-six states and 211 (6.7%) of the nation's 3138 counties reported measles cases.
A total of 3176 (93.1%) cases met the standard clinical case definition for measles,* and 1001 (29.3%) were serologically confirmed. The usual seasonal pattern was