TABLE 2.
Distribution of B. burgdorferi genospecies isolated from the I. ricinus ticks collected from five recreational areas of Helsinki
| Study area | No. of ticks studied | No. (%) of positive ticksa | No. (%) of typeable isolatesb | No. (%) of infections with the following:
|
|||
|---|---|---|---|---|---|---|---|
| B. afzelii | B. garinii | Mixed | B. burgdorferi sensu lato | ||||
| Meilahti | 103 | 20 (19) | 14 (70) | 7 (50) | 6 (43) | 1 (7) | |
| Seurasaari | 238 | 74 (31) | 43 (58) | 27 (63) | 14 (32) | 2 (5) | |
| Lehtisaari | 247 | 78 (32) | 44 (56) | 35 (80) | 7 (16) | 2 (4) | |
| Lauttasaari | 100 | 41 (41) | 26 (63) | 21 (81) | 4 (15) | 1 (4) | |
| Pihlajasaari | 38 | 21 (55) | 15 (71) | 9 (60) | 5 (33) | 1 (7) | |
| Total | 726 | 234 (32) | 142 (61) | 99 (70) | 36 (25) | 2 (1) | 5 (4) |
a
Numbers of ticks yielding a positive result by either cultivation, DF microscopy, or PCR analysis.
b
B. burgdorferi isolates grown in BSK-II medium were identified by genospecies-specific PCR methods or PCR-based sequencing of the flagellin gene.