Hi Janice. In Canada, the AZ jab was always a two part shot. I've never heard it said it was a 1 shot like the J&J vaccine. As I mentioned I had a second mRNA (Moderna) jab. The only symptom was an incredibly sore shoulder for about 3 days.
Perhaps that will cause you to understand my meaning of 2 half measures, and why a second Moderna jab should be coming for people who listened to the Canadian government regarding the AZ jab.