If Tanner was not being overly dramatic and operating on adrenaline and they really did give him a vaccine dose + booster when they arrested him, any of those protestors/truckers could drop dead in the next 24 hours to 3 weeks. This will be over either way, but a bunch of people will no longer be troubling the little prince on Parliament Hill.
I watched Tanner’s whole feed and he later confessed that he was kidding when he said they boosted him in his neck as they were putting him into the paddy wagon. He didn’t think we’d take him seriously because he said it was his 28th booster. He talks fast though so it’s easily missed.