Anyway, any studies you might know about I'd be anxious to look at.

I don't have any such. I was responding to the other poster. Intuitively it makes sense, but I have no idea if there's any science behind it (other than it came from his epidemiologist).

flightdoc appears to vehemently disagree. He is correct that our systems deal with many things at once. I have no idea how many it can handle. You would think that, like fighting a war on two fronts, your system would potentially run into resource constraints in dealing with what it perceives as multiple invaders.

I too would be interested in any actual studies, if they've been performed.

Feeling about 90% today. Maybe a bit more. Hard to tell since I woke up earlier than expected for no obvious reason, so I am a bit sleepy/tired (but can't get back to sleep).