Who are the unvaccinated and how can we change their minds before it's too late?

Magdi Semrau sorts the reachable from the unreachable.

We are seeing a new coronavirus surge in the US. In response, governments have engaged in a variety of vaccine incentives, from lotteries to free marijuana to straight-up cash. Pop star Olivia Rodriguez was invited to the White House. Rapper Juvenile changed “Back That Thing Up” to “Vax That Thing Up.” These efforts have emerged in an environment in whi…