HOW MANY DOSES IN VIAL?

There has been concern expressed on TV about mixing vaccines for COVID-19 vaccination. My concern is for more than one dose in one vial. Are the vials for vaccine one dose only? I have heard of bad batches in Alberta concerning expiration dates and the need for refrigeration. I would ask for one-dose vials with preparation at the time for injection. Supervision should be given regarding expiration dates and requirements for refrigeration.

Gail Mustard, Cornwall, P.E.I.