WHO report flags spike in cases of vaccine-derived poliovirus

At least 149 immunodeficiency vaccine-derived poliovirus cases were reported to WHO between 1961 and 2019

India declared polio free; no new case in 3 years

Children in the country will, however, continue to be vaccinated against the disease to maintain immunity

Africa eradicates polio, but vaccine-driven outbreaks rise

In Asia, India too was declared polio-free in 2014, but cVDPV was reported 50 times in the country in the past six years