http://www.sciencemag.org/news/2020/04/we-have-no-choice-pandemic-forces-polio-eradication-group-halt-campaigns > Going door-to-door to deliver the oral polio vaccine would put both communities and health workers at risk of COVID-19, the Global Polio Eradication Initiative says. > Science’s COVID-19 reporting is supported by the Pulitzer Center.