Listener mailbag – COVID-19 questions answered

During the COVID-19 pandemic, new information about the disease is discovered on a weekly basis and it can be hard to keep up. On the Mayo Clinic Q&A podcast, Dr. Gregory Poland, an infectious diseases expert and head of Mayo Clinic\'s Vaccine Research Group, answers listeners\' questions on COVID-19.

Does hand sanitizer expire? Is a face shield effective in protecting me from the virus? How long do I need to quarantine if I\'ve been exposed? Get answers to these questions and more on today\'s episode of Mayo Clinic Q&A.