It's explicitly called "vaccine-derived polio" in every article I've read about it, including from the WHO: https://www.who.int/westernpacific/news/q-a-detail/w

It's explicitly called "vaccine-derived polio" in every article I've read about it, including from the WHO: https://www.who.int/westernpacific/news/q-a-detail/what-is-vaccine-derived-polio https://www.who.int/westernpacific/news/q-a-detail/what-is-v...