Polio Remains Endemic in Nigeria, Pakistan And Afghanistan: Health Officials -- International Business Times
Although polio has been eradicated across much of the world, the disease remains endemic in Nigeria, Pakistan, Chad and Afghanistan, according to an international group.
Moreover, according to the Global Polio Eradication Initiative (GPEI), gaps in funding and insufficient immunization programs raises the threat of polio transmission in many countries.
GPEI is affiliated with the World Health Organization (WHO).
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My Comment: With wars ongoing in these regions, I cannot see a polio vaccination program in place.