A) India, Pakistan, Afghanistan
B) India, China, Bangladesh
C) Pakistan, Afghanistan
D) None of the above
Correct Answer: C
Solution :[c] Polio remains endemic in two countries-Afghanistan and Pakistan. Until poliovirus transmission is interrupted in these countries, all countries remain at risk of importation of polio, especially vulnerable countries with weak public health and immunization services and travel or trade links to endemic countries. Circulating vaccine-derived poliovirus is causing an outbreak in Madagascar, Guinea and Ukraine.
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