Don, you will never get it.
If the number increases from 1 to 5, that is a 500% increase, but it is still only five people.
The increase among heteros is hundreds of times lower than the limit for a rare disease, and it is only due to people moving here anyway.

You ask a very valid question. Why is it a raging epidemic for MSMs and an extremely rare disease in heteros?
The rest of us having been debating that for weeks, but it has all gone over your head.
Royston says it is because of "networks".
You always believe everything he says and attack anyone who disagrees with him, so I will leave it there.