Biology Reference
In-Depth Information
TABLE 13.1 Population at risk of Ascaris lumbricoides infection in 2010, by region
Population at
risk (unstable
transmission)
Population at risk
(stable transmission)
Total population
(millions)
Region
N
(million)
(%)
N
(million)
(%)
Asia
3487.0
3477.1
(99.7%)
e
e
Central Asia
76.8
76.2
(99.3%)
e
e
East Asia
1336.9
1331.5
(99.6%)
e
e
South Asia
1498.6
1494.7
(99.7%)
e
e
Southeast Asia
574.7
574.7
(100.0%)
e
e
Latin America (LA)
and the Caribbean
550.5
539.7
(98.0%)
0.4
(0.1%)
Caribbean
38.0
38.0
(100.0%)
e
e
Andean LA
49.5
39.6
(79.9%)
0.4
(0.8%)
Central LA
215.2
215.2
(100.0%)
e
e
Southern LA
55.0
54.1
(98.3%)
e
e
Tropical LA
192.8
192.8
(100.0%)
e
e
Sub-Saharan
Africa (SSA)
763.1
632.2
(82.8%)
87.0
(11.4%)
Central SSA
84.4
84.2
(99.7%)
0.2
(0.3%)
East SSA
313.4
270.3
(86.2%)
23.1
(7.4%)
Southern SSA
64.9
63.6
(97.8%)
1.3
(2.0%)
West SSA
300.4
214.2
(71.3%)
62.2
(20.7%)
North Africa and
Middle East
410.8
235.6
(57.3%)
96.7
(23.5%)
Oceania
9.7
9.7
(100.0%)
e
e
GLOBAL
5221.2
4894.3
(94.0%)
184.1
(3.5%)
Adapted from ref. 19.
a number of steps. First, areas within endemic countries that are biolog-
ically unsuitable for the transmission of A. lumbricoides are excluded on
this basis.
19
On this basis, 223 districts were excluded and assumed to
have zero prevalence. Second, for countries outside Africa, empirical
prevalence estimates at a district level were generated. For districts
without suitable data, provincial or national estimates were applied.
