Geographic distribution of C. trachomatis specimens according to three different strain typing methods, and genetic diversity within each area.

CI: Confidence interval.1C. trachomatis specimens from either the high school study (n = 60) or routine clinical samples in the laboratory (n = 20).2The numbers reflect the results for all 248 specimens and do not necessarily equal the sum of each row.3Sequence types of C. trachomatis detected by multilocus sequence typing.4Number of STs identified in an area divided by number of chlamydia specimens in the area.5Percentage novel STs in an area of total number of STs in the area.6Genovar D–K of C. trachomatis inferred from ompA sequencing.7Genotypes of C. trachomatis detected by ompA sequencing.