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Table 5 Estimated importations of polio infections into India (2010-2013)

From: Potential for international spread of wild poliovirus via travelers

Country Travelers to Indiaa Polio casesd Asymptomatic polio Vaccination coveragee Population sizef Importation
2010
Pakistan 51,749 144 28,800 0.82 173,149,306 3
Nigeria 23,893 21 4,200 0.54 159,707,780 0
Afghanistan 73,389 25 5,000 0.66 28,397,812 4
Niger 475 2 400 0.75 15,893,746 0
Chad 212 26 5,200 0.43 11,720,781 0
DRC NA 100 20,000 0.76 62,191,161 NC
Angola 1,620 33 6,600 0.92 19,549,124 0
Mali 495 4 800 0.8 13,985,961 0
Congo 1,930 441 88,200 0.9 4,111,715 14
India NA 42 8,400 0.7 1,205,624,648 NC
Uganda 3,011 4 800 0.79 33,987,213 0
Russia 122,048 14 2,800 0.98 142,385,523 1
Liberia 177 2 400 0.71 3,957,990 0
Nepal 104,374 6 1,200 0.83 26,846,016 2
Kazakhstan 8,786 1 200 0.98 16,321,581 0
Tajikistan NA 460 92,000 0.95 7,627,326 NC
Turkmenistan NA 3 600 0.96 5,041,995 NC
Senegal NA 18 3,600 0.79 12,950,564 NC
Mauritania 131 5 1,000 0.52 3,609,420 0
Sierra Leone NA 1 200 0.84 5,751,976 NC
TOTAL 392,290 1,352 270,400   1,952,811,638 24
2011
Pakistan 48,640 198 39,600 0.75 176,166,353 4
Nigeria 33,537 62 12,400 0.49 164,192,925 1
Afghanistan 89,605 80 16,000 0.68 29,105,480 16
Kenya 30,045 1 200 0.88 42,027,891 0
Niger 600 5 1,000 0.44 16,511,462 0
Chad 1,198 132 26,400 0.4 12,080,037 1
DRC NA 93 18,600 0.77 63,931,512 NC
CAR 37 4 800 0.47 4,436,217 0
China 142,218 21 4,200 0.99 1,344,130,000 0
Guinea 341 3 600 0.63 11,161,530 0
Cote d’Ivoire 637 36 7,200 0.58 19,389,954 0
Angola 1,891 5 1,000 0.85 20,180,490 0
Mali 815 7 1,400 0.78 14,416,737 0
Congo 3,623 1 200 0.9 4,225,359 0
Gabon 226 1 200 0.75 1,594,034 0
India NA 1 200 0.7 1,221,156,319 NC
TOTAL 353,413 650 130,000   3,144,706,300 22
2012
Pakistan 58,846 58 11,600 0.72 179,160,111 1
Nigeria 36,762 122 24,400 0.52 168,833,776 2
Afghanistan 95,231 37 7,400 0.71 29,824,536 8
Niger 497 1 200 0.78 17,157,042 0
Chad 194 5 1,000 0.56 12,448,175 0
TOTAL 191,530 223 44,600   407,423,640 11
2013
Pakistan 111,794c 93 18,600 0.72 182,142,594 4
Afghanistan 111,370c 14 2,800 0.71 30,551,674 3
Nigeria 34,522b 53 10,600 0.67 173,615,345 1
Somalia 462b 194 38,800 0.47 10,495,583 1
Syria 35,686b 35 7,000 0.52 22,850,000 4
Ethiopia 18,106b 9 1,800 0.7 94,100,756 0
Kenya 40,484c 14 2,800 0.82 44,353,691 1
Cameroon 1,515b 4 800 0.88 21,699,631 0
TOTAL 353,939 416 83,200   579,809,274 13
  1. a [30]
  2. b Data from United Nations World Tourism Organization
  3. c [29]
  4. d [31]
  5. e [27]
  6. f [28]
  7. NA = not available
  8. NC = not calculated