Table 2.
Estimates of the number of HTLV-1 infected carriers, based on approximately 1.5 billion of individuals from known HTLV-1 endemic areas and reliable epidemiological data obtained from studies performed among pregnant women and/or blood donors and/or different adult populations.
| Continent/Country | Population! | HTLV-1 range | |
|---|---|---|---|
| AFRICA | |||
| Senegal | 12,969,606 | 30,000 | 105,000 |
| Gambia | 1,840,454 | 2,500 | 13,000 |
| Guinea-Bissau | 1,628,603 | 12,000 | 28,000 |
| Guinea | 10,884,958 | 75,000 | 150,000 |
| Sierra Leone/ Liberia |
5,485,998/3,887,886 | 50,000 | 100,000 |
| Côte d’Ivoire | 21,952,093 | 130,000 | 250,000 |
| Ghana | 25,241,998 | 125,000 | 375,000 |
| Togo/Benin | 6,961,049/9,598,787 | 80,000 | 160,000 |
| Burkina Fasso | 17,275,115 | 42,000 | 125,000 |
| Mali | 14,533,511 | 32,000 | 95,000 |
| Nigeria | 170,123,740 | 850,000 | 1,700,000 |
| Cameroon | 20,129,878 | 80,000 | 180,000 |
| Eq. Guinea | 685,991 | 1,500 | 4,500 |
| Gabon | 1,608,321 | 16,000 | 30,000 |
| CAR | 5,057,208 | 15,000 | 30,000 |
| DRC | 73,599,190 | 600,000 | 1,300,000 |
| Republic of The Congo |
4,366,266 | 12,000 | 36,000 |
| Mozambique | 23,515,934 | 120,000 | 360,000 |
| South Africa | 48,810,427 | 180,000 | 540,000 |
| ASIA | |||
| China (Fujian Province) |
35,110,000 | 2,000 | 20,000 |
| Japan* | 127,368,088 | 1,080,000 | 1,300,000 |
| Iran (Mashad area) |
78,868,711 | 10,000 | 40,000 |
| Taiwan | 23,113,901 | 10,000 | 30,000 |
| EUROPE | |||
| United Kingdom** |
63,047,162 | 20,000 | 30,000 |
| France | 65,630,692 | 15,000 | 25,000 |
| Spain | 47,042,984 | 1,000 | 8,000 |
| Romania | 21,848,504 | 3,000 | 15,000 |
| CARIBBEAN REGION | |||
| Haiti/Dominican Republic |
9,801,664/10,088,598 | 150,000 | 350,000 |
| Jamaica | 2,889,187 | 100,000 | 140,000 |
| Guadeloupe# | 401,730 | 3,000 | 6,000 |
| Martinique# | 395,953 | 3,000 | 6,000 |
| Trindad and Tobago |
1,226,383 | 9,000 | 18,000 |
| NORTH AMERICA | |||
| United States | 313,847,465 | 90,000 | 100,000 |
| CENTRAL AND SOUTH AMERICA | |||
| Panama | 3,510,045 | 3,500 | 25,000 |
| Colombia (Tumaco area) |
45,594 (est.1988) | 1,000 | 1,500 |
| Venezuela | 28,047,938 | 14,000 | 70,000 |
| Suriname | 560,157 | 3,000 | 7,000 |
| French Guyana | 217,000 | 2,000 | 5,000 |
| Guyana | 741,908 | 2,000 | 5,000 |
| Peru | 29,549,517 | 150,000 | 450,000 |
| Brazil | 205,716,890 | 300,000 | 800,000 |
| Chile | 17,067,369 | 90,000 | 250,000 |
| AUSTRALO-MELANESIA | |||
| Australia (Aboriginal Australians) |
463,900 | 2,500 | 5,000 |
| Solomon Islands |
584,578 | 3,000 | 6,000 |
| Vanuatu | 227,574 | 250 | 1,000 |
| Total | 1,567,570,505 | 4,520,250 | 9,295,000 |
The HTLV-1 ranges were estimated combining the prevalence rates deduced from the above studied populations and the global repartition of individuals by age and sex in each studied country. In some highly populated countries and regions, such as China, India, the Maghreb and East Africa, correct estimates are currently not possible. Thus, the current total number of HTLV-1 carriers in the world is very probably much higher. Eq. Guinea, Equatorial Guinea; CAR, Central African Republic.
!According to the CIA World Factbook 2012 estimations (www.cia.gov).
*According to Satake et al. (2012).
**According to Brant et al. (2011).
#According to the National Institute of Statistics and Economic Studies 2011 estimations (www.insee.fr).