Justin Trudeau says Canada has inked a deal to obtain 20 million doses of another coronavirus vaccine candidate.The vaccine is being developed by AstraZeneca and Oxford University.[ Sign up for our Health IQ newsletter for the latest coronavirus updates ]Here’s when experts say Oxford University’s coronavirus vaccine could be readyIt’s one of several potential vaccines that the government has signed deals to procure in the event they are successful.This is a breaking news story that will be updated as more information becomes available..