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This year there have been 95 cases of circulating vaccine-derived polio cases in 12 countries in Asia and Africa, exceeding the 88 cases of wild poliovirus in Pakistan and Afghanistan. But the world continues to use the oral polio vaccine. Why and how can vaccine-derived polio cases be prevented?
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Jenny Lei Ravelo is a Devex Senior Reporter based in Manila. She covers global health, with a particular focus on the World Health Organization, and other development and humanitarian aid trends in Asia Pacific. Prior to Devex, she wrote for ABS-CBN, one of the largest broadcasting networks in the Philippines, and was a copy editor for various international scientific journals. She received her journalism degree from the University of Santo Tomas.