This is not about an actual doctor, it's a rhetorical device to make a point. But to assuage your worries, add to the hypothetical 'the doctor contracted hepati

This is not about an actual doctor, it's a rhetorical device to make a point. But to assuage your worries, add to the hypothetical 'the doctor contracted hepatitis the night before and didn't know yet he was infected when he operated'. (cue comments on incubation period of hepatitis...)