Table 1. H. pylori assignment to bacterial populations.
| Location/source of human population | Bacterial population | ||||
| No. of strains | hpAfrica1 | hpEurope | hpEAsia | hspAmerind | |
| African | 19 | 19 | |||
| Senegal | 5 | 5 | |||
| Burkina Faso | 14 | 14 | |||
| Europe | 36 | 36 | |||
| Spain | 36 | 36 | |||
| East Asian | 11 | 11 | |||
| Korea | 11 | 11 | |||
| Amerindian | 43 | 19 | 24 | ||
| Inuit (Eskimo) | 13 | 4 | 9 | ||
| Athabaskan (Na-Dene) | 6 | 6 | |||
| Huitoto | 16 | 12 | 4 | ||
| Piaroa | 3 | 3 | |||
| Guahibo | 5 | 3 | 2 | ||
| Mestizo | 22 | 5 | 17 | ||
| Colombia | 12 | 1 | 11 | ||
| Venezuela | 10 | 4 | 6 | ||
| All | 131 | 24 | 72 | 11 | 24 |
Multilocus sequences of the strains were from 7 housekeeping genes (atpA, efp, mutY, ppa, trpC, ureI and yphC). While only the expected populations were identified in African, Spanish and Korean hosts, strains assigned to more than one population were observed among Amerindians and Mestizos.