Candidate vaccines from all of these strategies should be tested for safety and efficacy. On March 16, 2020, the first clinical trial of a vaccine began with four volunteers in Seattle.
Chanjo za majaribio kutokana na mbinu hizi zozote zitalazimika kupimwa kwa ajili ya usalama na ufanisi. Tarehe 16, Machi 2020, jaribio la kwanza la kliniki la chanjo lilianza na watu 4 waliojitolea huko Seattle.