While Dr. Donald Sheppard said he’s optimistic, he said he is also concerned the level of immunity provided by COVID-19 vaccines may wane over time.
COVID-19: Experts optimistic Quebec will be able to avoid lockdowns this winter
© The Crystal Eyes
While Dr. Donald Sheppard said he’s optimistic, he said he is also concerned the level of immunity provided by COVID-19 vaccines may wane over time.
© The Crystal Eyes