Should Scientists Infect Healthy People with the Coronavirus to Test Vaccines?

March 26, 2020

(Nature) – As hundreds of millions of people, maybe billions, avoid social contact to spare themselves and their communities from coronavirus, researchers are discussing a dramatic approach to research that could help end the pandemic: infecting a handful of healthy volunteers with the virus to rapidly test a vaccine. Many scientists see a vaccine as the only solution to the pandemic. Clinical safety trials began this month for one candidate vaccine, and others will soon follow. But one of the biggest hurdles will be showing that a vaccine works. Typically, this is done through large phase III studies, in which thousands to tens of thousands of people receive either a vaccine or a placebo, and researchers track who becomes infected in the course of their daily lives.