CTV trumpets "a million doses a week" for Canada starting in April. Wooo! Great news!

Now for the math. Assuming 35ish million Canadians will need the vaccine after all the front line people get them, that's 35 weeks to get everyone vaccinated, right? Ooops, what about the second dose? So now we're talking 70 weeks for everyon to get two doses. Hmmm, how many weeks are there in a year? That's right, 52! So from April 2021 to April 2022 plus another 3 months to get to 70 weeks puts us in July 2022 before we are supposedly fully vaccinated. So, how long does the immunity last again...