Table 2 Estimated exported polio infections from polio-infected countries for 2013 and 2014, accounting for a ratio of apparent to inapparent polio infections of 200:1
From: Potential for international spread of wild poliovirus via travelers
Country | Outbound travelers a (2012) | Vaccination coverage (2013) b | Population size (2013) c | Symptomatic cases (2013) d | Symptomatic cases (2014) d | Asymptomatic infections (2013) | Asymptomatic infections (2014) | Exported polio infections (2013) | Exported polio infections (2014) |
|---|---|---|---|---|---|---|---|---|---|
Pakistan | 4,655,292 | 0.72 | 182,142,594 | 93 | 306 | 18,600 | 61,200 | 158 | 521 |
Afghanistan | 792,905 | 0.71 | 30,551,674 | 14 | 28 | 2,800 | 5,600 | 24 | 48 |
Nigeria | 1,829,727 | 0.67 | 173,615,345 | 53 | 6 | 10,600 | 1,200 | 37 | 4 |
Somalia | 98,390 | 0.47 | 10,495,583 | 194 | 5 | 38,800 | 1,000 | 121 | 3 |
Syria | 629,804 | 0.52 | 22,850,000 | 35 | 1 | 7,000 | 200 | 64 | 2 |
Ethiopia | 1,249,894 | 0.7 | 94,100,756 | 9 | 1 | 1,800 | 200 | 8 | 1 |
Kenya | 2,028,017 | 0.82 | 44,353,691 | 14 | 0 | 2,800 | NC | 43 | NC |
Cameroon | 505,550 | 0.88 | 21,699,631 | 4 | 5 | 800 | 1,000 | 6 | 8 |
Equatorial Guinea | 168,530 | 0.30 | 757,014 | 0 | 5 | NC | 1,000 | NC | 74 |
Iraq | 1,033,884 | 0.70 | 33,417,476 | 0 | 2 | NC | 400 | NC | 4 |
Total | 12,991,993 | 613,983,764 | 416 | 359 | 83,200 | 71,800 | 462 | 665 |