Pneumonia at the age of 4, possibly- but given that the doctor* didn’t notice it for several weeks and kept telling my parents it was viral and to wait for it to clear up on its own, I might have survived it even without the treatment I eventually got. On the other hand, one of the chest infections I’ve had since then because of the lung damage from it probably would have killed me without antibiotics.
What’s more likely is that I would have died of something I’m vaccinated against. Or, given where my family were at the time, been massacred by either Turks or Cossacks.
*I have nothing but admiration for the modern medical profession as a whole, but that doctor in particular was an idiot.
