By ROB GILLIES TORONTO (AP) — Canadian regulators on Friday authorized AstraZeneca’s coronavirus vaccine for all adults. It is the third COVID-19 vaccine given the green light by Canada, following those from Pfizer and Moderna. “This is very encouraging news. It means more people vaccinated, and sooner," Prime Minister Justin Trudeau said, adding that the nation of 38 million people will now get 6.5