| Country | ISO3 | Data type | Date | fcs prevalence (%) | People (approx) |
|---|---|---|---|---|---|
| Somalia | SOM | SURVEY | 2024-03-17 | 95.30 | 15,615,302 |
| Niger | NER | SURVEY | 2023-12-04 | 84.80 | 21,946,987 |
| Haiti | HTI | SURVEY | 2026-02-27 | 73.61 | 8,750,658 |
| Haiti | HTI | SURVEY | 2025-12-04 | 72.33 | 8,598,013 |
| Haiti | HTI | SURVEY | 2025-12-25 | 72.19 | 8,581,660 |
| Haiti | HTI | SURVEY | 2025-12-18 | 71.97 | 8,555,626 |
| Haiti | HTI | SURVEY | 2025-10-12 | 71.02 | 8,442,188 |
| Haiti | HTI | SURVEY | 2026-01-08 | 70.89 | 8,426,815 |
| Haiti | HTI | SURVEY | 2025-10-11 | 70.55 | 8,386,218 |
| Haiti | HTI | SURVEY | 2026-02-06 | 68.69 | 8,165,499 |
| Yemen | YEM | SURVEY | 2026-01-08 | 65.22 | 22,281,811 |
| Yemen | YEM | SURVEY | 2026-02-06 | 63.24 | 21,605,491 |
| Yemen | YEM | SURVEY | 2025-10-11 | 62.77 | 21,444,434 |
| Yemen | YEM | SURVEY | 2025-10-12 | 62.67 | 21,409,271 |
| Yemen | YEM | SURVEY | 2025-12-25 | 62.31 | 21,288,340 |
| Yemen | YEM | SURVEY | 2025-12-18 | 61.25 | 20,925,652 |
| Yemen | YEM | SURVEY | 2025-12-04 | 60.95 | 20,821,561 |
| Yemen | YEM | SURVEY | 2026-02-27 | 60.57 | 20,692,455 |
| Chad | TCD | SURVEY | 2024-01-05 | 58.27 | 9,292,262 |
| Sierra Leone | SLE | SURVEY | 2024-03-11 | 57.05 | 4,690,536 |
| Guinea | GIN | SURVEY | 2024-01-11 | 56.32 | 6,992,096 |
| Syrian Arab Republic | SYR | SURVEY | 2025-10-11 | 56.30 | 10,116,175 |
| Syrian Arab Republic | SYR | SURVEY | 2025-10-12 | 56.17 | 10,092,899 |
| Burkina Faso | BFA | SURVEY | 2023-12-04 | 55.91 | 11,042,420 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-04 | 52.85 | 8,936,642 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-18 | 47.95 | 7,612,056 |
| Nigeria | NGA | SURVEY | 2026-02-27 | 46.51 | 73,278,841 |
| Nigeria | NGA | SURVEY | 2026-02-06 | 46.14 | 72,703,859 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-25 | 45.64 | 7,716,796 |
| Syrian Arab Republic | SYR | SURVEY | 2026-01-08 | 42.40 | 7,168,636 |
| Nigeria | NGA | SURVEY | 2026-01-08 | 39.68 | 62,523,541 |
| Nigeria | NGA | SURVEY | 2025-12-25 | 38.85 | 61,220,013 |
| Colombia | COL | SURVEY | 2024-10-02 | 38.61 | 19,167,466 |
| Nigeria | NGA | SURVEY | 2025-12-04 | 37.55 | 59,163,348 |
| Nigeria | NGA | SURVEY | 2025-12-18 | 37.15 | 58,531,796 |
| Syrian Arab Republic | SYR | SURVEY | 2026-02-27 | 36.45 | 6,162,925 |
| Syrian Arab Republic | SYR | SURVEY | 2026-02-06 | 36.09 | 6,102,353 |
| Mauritania | MRT | SURVEY | 2024-03-18 | 34.05 | 1,499,498 |
| Madagascar | MDG | SURVEY | 2024-03-04 | 32.22 | 8,456,947 |
| Nigeria | NGA | SURVEY | 2025-10-12 | 32.10 | 50,572,217 |
| Nigeria | NGA | SURVEY | 2025-10-11 | 31.70 | 49,946,639 |
| Zimbabwe | ZWE | SURVEY | 2025-01-15 | 29.65 | 4,501,062 |
| Cameroon | CMR | SURVEY | 2025-12-04 | 29.58 | 7,458,379 |
| Mozambique | MOZ | SURVEY | 2023-12-04 | 28.48 | 8,399,736 |
| Cameroon | CMR | SURVEY | 2025-10-12 | 28.30 | 7,135,999 |
| Cameroon | CMR | SURVEY | 2025-10-11 | 28.24 | 7,121,991 |
| Cameroon | CMR | SURVEY | 2025-12-18 | 27.04 | 6,818,849 |
| Malawi | MWI | SURVEY | 2023-12-04 | 26.57 | 4,820,530 |
| Kenya | KEN | SURVEY | 2024-01-16 | 26.49 | 13,611,711 |
| Cameroon | CMR | SURVEY | 2025-12-25 | 26.47 | 6,674,382 |
| Cameroon | CMR | SURVEY | 2026-01-08 | 26.08 | 6,575,164 |
| Cameroon | CMR | SURVEY | 2026-02-27 | 25.87 | 6,523,465 |
| Cameroon | CMR | SURVEY | 2026-02-06 | 25.69 | 6,476,791 |
| Ukraine | UKR | SURVEY | 2026-02-06 | 24.75 | 3,453,348 |
| Ukraine | UKR | SURVEY | 2026-02-27 | 24.27 | 3,387,567 |
| Ukraine | UKR | SURVEY | 2025-12-18 | 21.94 | 3,062,032 |
| Ukraine | UKR | SURVEY | 2025-12-25 | 21.17 | 2,953,804 |
| Ukraine | UKR | SURVEY | 2025-12-04 | 21.13 | 2,949,128 |
| Ukraine | UKR | SURVEY | 2026-01-08 | 20.96 | 2,925,553 |
| Zambia | ZMB | SURVEY | 2024-01-19 | 19.17 | 3,325,604 |
| Côte d'Ivoire | CIV | SURVEY | 2024-03-15 | 17.48 | 5,136,499 |
| Ukraine | UKR | SURVEY | 2025-10-12 | 16.92 | 2,361,674 |
| Ukraine | UKR | SURVEY | 2025-10-11 | 16.88 | 2,356,278 |
| Angola | AGO | SURVEY | 2023-12-04 | 15.49 | 5,281,612 |
| Honduras | HND | SURVEY | 2025-12-04 | 11.46 | 1,098,540 |
| Ecuador | ECU | SURVEY | 2025-12-25 | 11.21 | 1,955,074 |
| Ecuador | ECU | SURVEY | 2025-12-04 | 11.17 | 1,947,837 |
| Ecuador | ECU | SURVEY | 2025-12-18 | 10.71 | 1,867,551 |
| Ecuador | ECU | SURVEY | 2025-10-12 | 9.34 | 1,629,041 |
| Ecuador | ECU | SURVEY | 2025-10-11 | 9.25 | 1,611,955 |
| United Republic of Tanzania | TZA | SURVEY | 2024-02-16 | 9.24 | 5,202,349 |
| Honduras | HND | SURVEY | 2025-12-18 | 8.86 | 849,385 |
| Namibia | NAM | SURVEY | 2023-12-04 | 8.77 | 201,629 |
| Ecuador | ECU | SURVEY | 2026-01-08 | 8.76 | 1,526,501 |
| Ecuador | ECU | SURVEY | 2026-02-27 | 8.28 | 1,443,910 |
| Dominican Republic | DOM | SURVEY | 2025-12-04 | 7.94 | 855,412 |
| Honduras | HND | SURVEY | 2025-10-11 | 7.83 | 750,922 |
| Honduras | HND | SURVEY | 2025-12-25 | 7.78 | 745,446 |
| Dominican Republic | DOM | SURVEY | 2025-12-24 | 7.75 | 835,200 |
| Dominican Republic | DOM | SURVEY | 2025-12-18 | 7.68 | 827,503 |
| Ecuador | ECU | SURVEY | 2026-02-06 | 7.13 | 1,242,647 |
| Honduras | HND | SURVEY | 2025-10-12 | 6.66 | 638,652 |
| Guatemala | GTM | SURVEY | 2025-10-11 | 6.16 | 1,062,801 |
| Guatemala | GTM | SURVEY | 2025-10-12 | 6.09 | 1,051,118 |
| Dominican Republic | DOM | SURVEY | 2025-10-11 | 5.83 | 628,463 |
| Dominican Republic | DOM | SURVEY | 2025-10-12 | 5.82 | 627,012 |
| Honduras | HND | SURVEY | 2026-01-08 | 5.47 | 524,796 |
| Honduras | HND | SURVEY | 2026-01-21 | 5.30 | 508,052 |
| Iraq | IRQ | SURVEY | 2024-10-05 | 3.63 | 1,494,214 |
| Guatemala | GTM | SURVEY | 2025-12-18 | 2.56 | 441,320 |
| Guatemala | GTM | SURVEY | 2025-12-25 | 2.33 | 401,035 |
| Guatemala | GTM | SURVEY | 2025-12-04 | 2.15 | 371,384 |
| El Salvador | SLV | SURVEY | 2025-12-18 | 1.35 | 86,937 |
| El Salvador | SLV | SURVEY | 2025-12-25 | 1.32 | 84,995 |
| El Salvador | SLV | SURVEY | 2026-02-06 | 1.27 | 81,429 |
| El Salvador | SLV | SURVEY | 2025-12-04 | 1.26 | 81,166 |
| El Salvador | SLV | SURVEY | 2025-10-11 | 1.00 | 63,982 |
| El Salvador | SLV | SURVEY | 2025-10-12 | 0.96 | 61,433 |
| El Salvador | SLV | SURVEY | 2026-02-22 | 0.46 | 29,684 |
| El Salvador | SLV | SURVEY | 2026-01-08 | 0.23 | 14,998 |
| Country | ISO3 | Data type | Date | rcsi prevalence (%) | People (approx) |
|---|---|---|---|---|---|
| Haiti | HTI | SURVEY | 2025-12-04 | 66.39 | 7,892,616 |
| Haiti | HTI | SURVEY | 2025-12-18 | 64.03 | 7,611,618 |
| Haiti | HTI | SURVEY | 2025-10-11 | 62.45 | 7,424,198 |
| Haiti | HTI | SURVEY | 2025-12-25 | 62.17 | 7,390,000 |
| Haiti | HTI | SURVEY | 2025-10-12 | 62.16 | 7,389,727 |
| Haiti | HTI | SURVEY | 2026-02-27 | 62.05 | 7,376,548 |
| Haiti | HTI | SURVEY | 2026-01-08 | 61.75 | 7,341,068 |
| Haiti | HTI | SURVEY | 2026-02-06 | 59.68 | 7,093,878 |
| Zimbabwe | ZWE | SURVEY | 2025-01-15 | 58.54 | 8,885,207 |
| Syrian Arab Republic | SYR | SURVEY | 2025-10-11 | 52.24 | 9,385,224 |
| Syrian Arab Republic | SYR | SURVEY | 2025-10-12 | 52.21 | 9,381,304 |
| Malawi | MWI | SURVEY | 2023-12-04 | 47.07 | 8,540,521 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-18 | 46.51 | 7,383,203 |
| Sierra Leone | SLE | SURVEY | 2024-03-11 | 44.34 | 3,645,199 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-25 | 44.27 | 7,485,106 |
| Syrian Arab Republic | SYR | SURVEY | 2025-12-04 | 43.51 | 7,357,560 |
| Syrian Arab Republic | SYR | SURVEY | 2026-01-08 | 42.58 | 7,199,800 |
| Yemen | YEM | SURVEY | 2025-10-11 | 41.35 | 14,126,804 |
| Angola | AGO | SURVEY | 2023-12-04 | 41.26 | 14,066,647 |
| Yemen | YEM | SURVEY | 2025-10-12 | 41.21 | 14,080,467 |
| Yemen | YEM | SURVEY | 2026-02-27 | 39.77 | 13,587,256 |
| Syrian Arab Republic | SYR | SURVEY | 2026-02-06 | 39.18 | 6,625,222 |
| Yemen | YEM | SURVEY | 2025-12-04 | 39.07 | 13,347,610 |
| Syrian Arab Republic | SYR | SURVEY | 2026-02-27 | 38.71 | 6,545,211 |
| Nigeria | NGA | SURVEY | 2025-10-11 | 37.92 | 59,755,350 |
| Nigeria | NGA | SURVEY | 2025-10-12 | 37.85 | 59,639,810 |
| Yemen | YEM | SURVEY | 2025-12-18 | 37.66 | 12,864,973 |
| Yemen | YEM | SURVEY | 2025-12-25 | 37.61 | 12,848,065 |
| Yemen | YEM | SURVEY | 2026-01-08 | 35.79 | 12,228,225 |
| Yemen | YEM | SURVEY | 2026-02-06 | 34.38 | 11,744,312 |
| Kenya | KEN | SURVEY | 2024-01-16 | 34.03 | 17,488,455 |
| Nigeria | NGA | SURVEY | 2025-12-04 | 33.51 | 52,804,460 |
| Nigeria | NGA | SURVEY | 2025-12-18 | 32.97 | 51,953,778 |
| Guinea | GIN | SURVEY | 2024-01-11 | 32.86 | 4,079,611 |
| Colombia | COL | SURVEY | 2024-10-02 | 32.75 | 16,262,334 |
| Nigeria | NGA | SURVEY | 2025-12-25 | 32.22 | 50,774,053 |
| Cameroon | CMR | SURVEY | 2025-10-11 | 32.07 | 8,087,333 |
| Cameroon | CMR | SURVEY | 2025-10-12 | 32.00 | 8,068,236 |
| Cameroon | CMR | SURVEY | 2026-01-08 | 31.26 | 7,882,549 |
| Cameroon | CMR | SURVEY | 2025-12-18 | 31.20 | 7,866,760 |
| Cameroon | CMR | SURVEY | 2025-12-25 | 31.15 | 7,854,714 |
| Nigeria | NGA | SURVEY | 2026-01-08 | 30.78 | 48,498,946 |
| Cameroon | CMR | SURVEY | 2025-12-04 | 30.63 | 7,724,251 |
| Cameroon | CMR | SURVEY | 2026-02-06 | 30.57 | 7,708,235 |
| Cameroon | CMR | SURVEY | 2026-02-27 | 30.00 | 7,564,225 |
| Madagascar | MDG | SURVEY | 2024-03-04 | 29.78 | 7,816,509 |
| Ecuador | ECU | SURVEY | 2026-01-08 | 29.35 | 5,117,063 |
| Namibia | NAM | SURVEY | 2023-12-04 | 28.68 | 659,693 |
| Nigeria | NGA | SURVEY | 2026-02-06 | 28.65 | 45,150,454 |
| Ecuador | ECU | SURVEY | 2025-12-25 | 27.31 | 4,761,773 |
| Ecuador | ECU | SURVEY | 2025-12-18 | 25.98 | 4,530,031 |
| Mozambique | MOZ | SURVEY | 2023-12-04 | 25.42 | 7,497,086 |
| Nigeria | NGA | SURVEY | 2026-02-27 | 25.27 | 39,823,189 |
| Ecuador | ECU | SURVEY | 2025-12-04 | 24.66 | 4,299,086 |
| Côte d'Ivoire | CIV | SURVEY | 2024-03-15 | 24.32 | 7,146,630 |
| Guatemala | GTM | SURVEY | 2025-10-11 | 23.15 | 3,992,439 |
| Guatemala | GTM | SURVEY | 2025-10-12 | 21.83 | 3,764,712 |
| Somalia | SOM | SURVEY | 2024-03-17 | 21.02 | 3,443,866 |
| Honduras | HND | SURVEY | 2025-12-18 | 20.68 | 1,982,603 |
| Guatemala | GTM | SURVEY | 2025-12-04 | 20.63 | 3,558,656 |
| Ecuador | ECU | SURVEY | 2026-02-06 | 20.25 | 3,531,157 |
| Chad | TCD | SURVEY | 2024-01-05 | 19.78 | 3,154,945 |
| Honduras | HND | SURVEY | 2026-01-21 | 19.57 | 1,876,729 |
| Honduras | HND | SURVEY | 2025-12-25 | 19.42 | 1,861,565 |
| Ecuador | ECU | SURVEY | 2026-02-27 | 18.98 | 3,308,442 |
| Dominican Republic | DOM | SURVEY | 2025-12-24 | 18.35 | 1,976,315 |
| Dominican Republic | DOM | SURVEY | 2025-12-18 | 18.24 | 1,964,889 |
| Niger | NER | SURVEY | 2023-12-04 | 18.11 | 4,686,704 |
| Ukraine | UKR | SURVEY | 2025-12-18 | 17.63 | 2,459,869 |
| Honduras | HND | SURVEY | 2025-10-12 | 17.39 | 1,666,832 |
| Dominican Republic | DOM | SURVEY | 2025-12-04 | 17.26 | 1,858,812 |
| Honduras | HND | SURVEY | 2025-10-11 | 17.13 | 1,642,228 |
| Ukraine | UKR | SURVEY | 2025-10-11 | 17.12 | 2,389,511 |
| Ukraine | UKR | SURVEY | 2025-12-04 | 16.98 | 2,369,797 |
| Ukraine | UKR | SURVEY | 2025-10-12 | 16.59 | 2,315,307 |
| Ukraine | UKR | SURVEY | 2025-12-25 | 15.69 | 2,189,587 |
| Guatemala | GTM | SURVEY | 2025-12-18 | 15.67 | 2,702,915 |
| Honduras | HND | SURVEY | 2026-01-08 | 15.62 | 1,497,844 |
| El Salvador | SLV | SURVEY | 2025-12-25 | 15.49 | 994,688 |
| Ecuador | ECU | SURVEY | 2025-10-12 | 15.43 | 2,689,781 |
| Ecuador | ECU | SURVEY | 2025-10-11 | 15.37 | 2,680,581 |
| El Salvador | SLV | SURVEY | 2026-01-08 | 15.34 | 985,197 |
| Dominican Republic | DOM | SURVEY | 2025-10-12 | 15.33 | 1,651,068 |
| Honduras | HND | SURVEY | 2025-12-04 | 15.30 | 1,467,185 |
| Dominican Republic | DOM | SURVEY | 2025-10-11 | 15.25 | 1,642,456 |
| Zambia | ZMB | SURVEY | 2024-01-19 | 14.81 | 2,570,107 |
| Guatemala | GTM | SURVEY | 2025-12-25 | 14.69 | 2,534,100 |
| Burkina Faso | BFA | SURVEY | 2023-12-04 | 13.43 | 2,652,720 |
| United Republic of Tanzania | TZA | SURVEY | 2024-02-16 | 12.97 | 7,302,320 |
| Ukraine | UKR | SURVEY | 2026-02-27 | 12.88 | 1,797,739 |
| Ukraine | UKR | SURVEY | 2026-01-08 | 12.24 | 1,708,281 |
| Ukraine | UKR | SURVEY | 2026-02-06 | 11.30 | 1,576,320 |
| El Salvador | SLV | SURVEY | 2026-02-22 | 11.23 | 721,222 |
| El Salvador | SLV | SURVEY | 2025-12-18 | 11.04 | 708,566 |
| El Salvador | SLV | SURVEY | 2026-02-06 | 10.97 | 704,568 |
| El Salvador | SLV | SURVEY | 2025-12-04 | 10.64 | 683,259 |
| El Salvador | SLV | SURVEY | 2025-10-12 | 7.24 | 464,733 |
| El Salvador | SLV | SURVEY | 2025-10-11 | 7.19 | 461,620 |
| Iraq | IRQ | SURVEY | 2024-10-05 | 3.44 | 1,415,589 |
| Mauritania | MRT | SURVEY | 2024-03-18 | 3.02 | 132,765 |