TABLE 1.
Etiologic agents of human babesiosis and associated cases of TTB
| Etiologic agent | Geographic distribution (parasite type) | No. of TTB cases |
|---|---|---|
| Babesia microti | United States, Northeast and Upper Midwest | 70-100 |
| Europe (not well defined) | 1 | |
| Japan | 1 | |
| Taiwan (TW-1) | 0 | |
| Babesia divergens | Europe, primarily England and France | 0 |
| United States, Kentucky and Washington | 0 | |
| B. divergens-like | Austria, Italy, and Germany (EU-1) | 0 |
| Missouri (MO-1) | 0 | |
| Babesia duncani | United States, California and Washington | 2 |
| Other Babesia spp. | United States, California (CA-1-CA-4) | 0 |
| South Korea (KO-1) | 0 |