While most Americans say they want to get the Covid-19 vaccine (once it is safely tested and approved for use), there is significant vaccine hesitancy in the United States. There’s also the fact that medical conspiracists are already spreading misinformation to millions of people who will listen. That’s why, as Kelly Osgood reports, experts say advocacy efforts for the Covid-19 vaccine need to start right now. And science communicators can learn from the work of activists in the childhood vaccine space. Read more below.