How human challenge trials may help create a COVID-19 vaccine.
RELATED: COVID deaths of Native Americans linked to limited access to resources and healthcare
Infecting young, healthy people with COVID-19 is an important, but controversial, part of creating a viable vaccine.
» Subscribe to USA TODAY:
» Watch more on this and other topics from USA TODAY:
» USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR.
#covidvaccine #covidtrials #usatoday