Had my latest covid jab a couple of weeks ago.
They asked if I'd had a flu jab - I haven't, never had one in my life before.
Since Covid arrived in 2020 I've had it once (with a bit of a snuffle for 24-48 hours) and I've not had a cold, a sneeze or a sore throat or anything else cold related since.
To me it's like the vaccine has cured the common cold.