Hmm. Think I'll call Telehealth, explain that I've got a wife with bronchitis and an elderly muminlaw with a somewhat-compromised immune system at home, explain my exposure level (nearly none, but..) and ask if I should get needled, just to be on the safe side.

(thinks) It's been five years since my Tetanus, but honestly, I can't remember the last time I had any boosters refreshed.