Table 2. Geographic distribution of C. trachomatis specimens according to three different strain typing methods, and genetic diversity within each area.

Geographic area	Finnmark1	Tromsø	Trondheim	Total2
No of chlamydia specimens	80	80	88	248
No of STs3	21	27	28	50
No of novel STs	10	18	14	31
No of cases with novel STs	33	34	34	101
ST variation4 (95% CI)	0.26 (0.17–0.40)	0.34 (0.23–0.44)	0.32 (0.22–0.41)	0.20 (0.15–0.25)
% novel STs5 (95% CI)	47.6 (26.3–69.0)	66.7 (48.9–84.5)	50.0 (31.5–68.5)	62.0 (48.6–75.5)
No of genovars6 D–K	6	7	7	8
No of ompA genotypes7	7	10	9	11

CI: Confidence interval.

¹ C. 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.