NEW DELHI: India continues to have the world’s highest number of polio cases this year, with the disease having crippled more children till April than it did during the same period in 2007.
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The children who got polio despite multiple doses, did not get enough number of doses to develop adequate protection to polio virus,” a health ministry official said. According to experts, children living in areas with poor environmental sanitation and high population density, like the endemic districts of Uttar Pradesh and Bihar, need higher doses of polio vaccine to be adequately protected against the virus as they are more frequently exposed to polio virus under these circumstances.
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