As the world continues to get vaccinated every day for COVID-19, there are a few remaining questions about COVID-19 immunity. In this final episode of season 1, I end off my discussion with Dr. Caitlin Mullarkey. She answers a few questions involving the four-month wait period between vaccine doses, and why the second dose of the vaccine might result in worse symptoms than the first dose. We also get to hear Dr. Mullarkey’s thoughts on vaccine communication efforts in the media!