First dose Pfizer, second dose Moderna is quite common in Ontario. We had a ton of supply of Pfizer, so many got it as their first dose, but by the time second

First dose Pfizer, second dose Moderna is quite common in Ontario. We had a ton of supply of Pfizer, so many got it as their first dose, but by the time second dose time came around, Pfizer was approved for teens and Moderna was not, so a lot ended up with Moderna as the second dose.