The prospect of booster shots is igniting a global health debate. August 16, 2021 Auto Bot Africa, Centers for Disease Control and Prevention, Coronavirus (2019-nCoV), Europe, France, Germany, Israel, Transplants, United States, United States Politics and Government, Vaccination and Immunization 0 Citing a lack of scientific evidence, the W.H.O. argues that extra vaccine doses should be sent to poor countries instead.