More polio cases now caused by vaccine than by wild virus
https://abcnews.go.com/Health/wireStory/polio-cases-now-caused-vaccine-wild-virus-67287290

The Independent Monitoring Board, a group set up by WHO to assess polio eradication, warned in a report this month that vaccine-derived polio virus is “spreading uncontrolled in West Africa, bursting geographical boundaries and raising fundamental questions and challenges for the whole eradication process.”

The group said officials were already “failing badly” to meet a recently approved polio goal of stopping all vaccine-derived outbreaks within 120 days of detection. It described the initial attitude of WHO and its partners to stopping such vaccine-linked polio cases as “relaxed” and said “new thinking” on how to tackle the problem was needed.