TABLE 3.
Variation of the SSTR9 types in epidemic or passages of F. tularensis strainsa
| Origin | Yr of isolation | No. of isolates | Source | SSTR9 allele sizes (bp) | No. of allelic variants of SSTR9 |
|---|---|---|---|---|---|
| Human epidemic, Oulu area, Finland | 1996–1997 | 7 | Ulcer, pleural fluid, blood | 396–414 | 3 |
| Human epidemic, Ljusdal area, Sweden | 1981 | 7 | Ulcer | 297–351 | 3 |
| Epizootic in hares, Ljusdal area, Sweden | 1981 | 1 | Autopsy | 351 | 1 |
| Human epidemic, Ljusdal area, Sweden | 1995 | 6 | Ulcer | 297 | 1 |
| Human epidemic, Ljusdal area, Sweden | 1998 | 6 | Ulcer | 297–306 | 2 |
| Human epidemic along the river Västerdalälven, Sweden | 1995 | 6 | Ulcer | 315–414 | 3 |
| Phenotypic variants of Schu strain (Schu and Schu S4), originally a human isolate | 1941 | 2 | Ulcer | 432 | 1 |
| Rabbit isolate (Nevada 14) and laboratory-acquired infection (F. tul. AC) from handling the isolate | 1953 and 1954 | 2 | Autopsy of hare and human ulcer | 351 | 1 |
| Passages of LVS (ATCC 29684) on agar medium | 55 | 351 | 1 | ||
| Passages of hare isolate (FSC074) in small mammals | 1974 | 13 | Autopsy | 315 | 1 |
a
Schu strain, Nevada 14, and F. tul. AC belong to F. tularensis subsp. tularensis; all other isolates belong to F. tularensis subsp. holarctica.