Volunteers are the key to COVID-19 vaccine trials.
RELATED: Kenosha police shooting and a vision of America
It takes a lot of people to develop a COVID-19 vaccine. Volunteers may be one of the most important.
» 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 #covid19 #usatoday