How can I volunteer for a COVID-19 vaccine study?

People interested in volunteering for COVID-19 vaccine studies can sign up on websites set up by governments and companies. But it’s important to understand how the research works. Initial studies include only a few dozen healthy volunteers. Older adults, people with serious illnesses and pregnant women are typically excluded. Mid-stage studies include a few hundred people and collect more safety data. For final-stage studies, scientists need tens of thousands of volunteers who reflect the