AstraZeneca, Johnson & Johnson’s resuming US tests of COVID-19 vaccines

Two drugmakers announced Friday the resumption of U.S. testing of their COVID-19 vaccine candidates.

Testing of AstraZeneca’s vaccine candidate had been halted since early September, while Johnson & Johnson’s vaccine study was paused at the beginning of last week. Each company had a study volunteer develop a serious health issue, requiring a review of safety data.