Infectious disease specialist answers viewer questions about COVID-19 vaccine effectiveness Dartmouth-Hitchcock Medical Center Infectious Disease Specialist Dr. Michael Calderwood answers questions about how safe and effective COVID-19 vaccines are. Share Updated: 10:29 PM EDT May 21, 2021 Infectious disease specialist answers viewer questions about COVID-19 vaccine effectiveness Dartmouth-Hitchcock Medical Center Infectious Disease Specialist Dr. Michael Calderwood answers questions about how safe and effective COVID-19 vaccines are. Share Updated: 10:29 PM EDT May 21, 2021 Hide Transcript Show Transcript BUT THERE ARE EXEMPTIONS.... LIKE RELIGIOUS BELIEFS, MEDICAL CONDITIONS OR DISABILTIES. FROM SIDE EFFECTS TO WHETHER WE'LL NEED BOOSTER SHOTS - MANY OF YOU HAVE QUESTIONS ABOUT THE VACCINE. AN INFECTIOUS DISEASE SPECIALIST ANSWERED ONES áYOU SUBMITTED LIVE ON NEWS 9 EARLIER TONIGHT. DARTMOUTH HITCHCOCK INFECTIOUS DISEASE SPECIALIST DR. MICHAEL CALDERWOOD.. JOINED US TO ANSWER QUESTIONS YOU SUBMITTED - LIKE SHOULD YOU GET THE VACCINE IF YOU'VE ALREADY HAD COVID-19? WITH MORE THAN 1.5 BILLION DOSES ADMINISTERED WORLDWIDE - DR CALDERWOOD SAYS THE VACCINE IS SAFE. IF YOU ARE VACCINATED, CAN YOU STILL SPREAD COVID-19 TO THOSE WHO ARE NOT?