[alexander_busek]

I looked at some mortality rates at a variety of ages and two genders. It took at least a 5 year age difference to double the rate. What led you to a 2 year age difference?

I clearly indicated that my figure of a 2-3 year age-difference was an entirely hypothetical supposition, for the sake of speculation.

Note that in addition to an age difference between the two groups, there could be a health difference. Unhealthy folks might very well tend to get vaccinated.

Might be. But could also be the reverse. It's too bad that this data doesn't permit an exploration of such interesting suppositions!

Regards,

[Tymesup]

I forgot how precisely you use language!