"Unless our public health leaders can generate a lot of trust, it's going to be very, very difficult." One of the key concerns that needs to be directly addressed is how a coronavirus vaccine can be developed more quickly than any vaccine before it and still be safe, Jarry said. "Health Canada will see to that. Many scientists don't expect a coronavirus vaccine to be nearly as protective as the measles shot. If the best COVID-19 vaccine is only 50 per cent effective, "that's still to me a great vaccine," said Dr. Drew Weissman of the University of Pennsylvania.

Source: CBC News June 29, 2020 20:26 UTC