What’s the half life of the first dose? Scientists want the 2nd in you within 4 months. The trailing allocation will track the 1st dose by 4 mos - that will start ramping now, so 13m 2nd doses will be directed at those with 1 dose between now and august.
We didn't switch to a delayed-second-dose strategy until mid to late February, and we didn't start vaccination in large numbers until March. Most of the relatively small number of people who got their first dose before the end of February have already had their second, and the big number of second doses isn't due to start hitting until July. We need to get as many first doses into arms as possible in May and June.
Pfizer is due to ship a little over 2 million doses per week to Canada starting this week through May, then 2.4 million per week through June. Now that the US has more supply than demand, those are now coming from their plant in Michigan, so no longer subject to EU export headaches (and I'm sure the EU is happy to not have to export those; they could use those doses themselves).
2 million doses per week = 800,000 per week to Ontario = 114,000 per day. We can do that. (Did more than that today.) And that's just Pfizer. Haven't counted any Moderna or anything else. In June that goes up to 137,000 per day in Ontario just Pfizer.
800,000 per week x 4 weeks + 960,000 per week x 4 weeks = 7 million shots, mostly first doses, we've already got 5.4 million covered, that's 12.4 million people, about 85% of the whole province ... just Pfizer ... Moderna shipments have been inconsistent (they short-shipped last week but then what we got this week was meant to be next week) but definitely non-zero, and this is assuming no more AZ and J&J continues having issues.
We should be circling back to starting to deliver more second doses (slightly before the 4-month plan) sometime in June.
CTV News was saying that the city of Toronto was going to be opening up appointments in the second week of June starting tomorrow. I know this is somewhat hard to relate to actual number of vaccines planned to be delivered, because of people booking multiple appointments and then cancelling ... or not showing up, and messing up the works.
Bottom line ... we are not okay yet, but we soon will be.