Table 1.
Overview of geographical distributions of Secretor (Se) and Lewis (Le) occurrence.
| Country | n= | Se (%) | Le (%) | Reference |
|---|---|---|---|---|
| Brazil | 77 | 88 | 88 | [81] |
| Burkina Faso | 53 | 76 | 87 | [79] |
| Chile | 44 | 84 | 80 | [78] |
| China | 32 | 78 | 91 | [78] |
| China | 540 | 79 | nd | [49] |
| China Sohhot | 30 | 80 | 94 | [82] |
| Ethiopia Rur | 40 | 65 | nd | [68] |
| Ethiopia Urb | 40 | 78 | nd | [68] |
| France | 22 | 91 | 68 | [78] |
| France | 83 | 87 | 89 | [66] |
| Gambia Rur | 40 | 65 | nd | [68] |
| Gambia Urb | 40 | 85 | nd | [68] |
| Germany | 18 | 83 | 100 | [78] |
| Germany | 50 | 78 | 89 | [64] |
| Germany | 30 | 83 | 90 | [71] |
| Ghana | 40 | 68 | nd | [68] |
| Italy | 63 | 66 | 84 | [54] |
| Italy | 29 | 86 | 86 | [78] |
| Italy–Sicily | 50 | 77 | 97 | [79] |
| Kenya | 42 | 81 | nd | [68] |
| Malaysia | 20 | 65 | 90 | * Unpubl |
| Mexico | 316 | 100 | 74 | [83] |
| Mexico | 156 | 100 | 83 | [78] |
| Netherlands | 32 | 72 | 88 | [73] |
| Netherlands | 121 | 73 | nd | [41] |
| Peru | 43 | 98 | nd | [68] |
| Philippines | 22 | 46 | 96 | [78] |
| Portugal | 95 | 66 | 86 | [66] |
| Romania | 40 | 90 | 93 | [66] |
| Singapore | 26 | 72 | 96 | [78] |
| Spain | 32 | 66 | 81 | [56] |
| Spain | 41 | 76 | nd | [68] |
| Sweden | 24 | 79 | nd | [68] |
| Sweden | 40 | 90 | 95 | [66] |
| Switzerland | 61 | 79 | 94 | [53] |
| USA | 79 | 68 | 90 | [78] |
| USA Calif | 19 | 95 | nd | [68] |
| USA Wash | 41 | 68 | nd | [68] |
| Vietnam | 101 | 60 | 87 | [36] |
| Ho Chi Minh | 18 | 72 | 89 | [36] |
| Ha Long Bay | 20 | 80 | 90 | [36] |
| Hanoi | 21 | 33 | 86 | [36] |
| Phu Tho | 22 | 64 | 91 | [36] |
| Tien Giang | 20 | 55 | 80 | [36] |
Some regions have been analyzed by multiple studies. Rur indicates rural environment and Urb indicates urban environment, nd indicates that no data were available. * indicates an unpublished sample set from our lab.