content: A healthy dose of scepticism of medicine is a good thing. Stubbornness and ego is not. Penicillin was fairly new at the time, it is possible he really didn't know it existed. It is interesting that for an obvious tie in to the "anti-vax" crowd today, the worst that came from his decision to not vaccinate his kids was a disease easily solved by a dose of penicillin. Not proof in any way that not vaccinating is a good idea; everyone should make their own judgements.