Immunotypes of Chlamydia trachomatis isolates in Seattle, Washington

The immunotype distribution of 493 Chlamydia trachomatis isolates from 467 adults and 26 infants in the Seattle area from 1965 to 1982 is presented. All except one of the isolates from adults were from the genitourinary tract, rectum, or bubo. The proportions of each immunotype were ED, 46.5%; GF, 24.6%; H, I, J/CJ, and K, 5 to 7% each; B, 3.5%; and L2, 1%.