HANOI, Vietnam (AFP) — A Vietnamese pharmaceutical company began testing a coronavirus vaccine on volunteers in Hanoi on Thursday, as developing countries jostle with richer nations to access affordable inoculations. Nanogen’s Nanocovax is one of four under development in Vietnam, and a company representative said it is expected to cost around $5 a dose. Three volunteers received the jab on Thursday and will be monitored for 72 hours at the Vietnam Military Medical University. […]