Skip to main content

Advertisement

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
  1. a Data from International Air Transport Association (source: Bluedot; Kamran Khan)
  2. b [27]
  3. c [28] (2013)
  4. d [15]
  5. NC = not calculated