I think tools 1 trillion years from now that stumble across that headline will wonder what humanity was.
We will be lucky to still be here in 100 years.
Rare, but not unheard of. With only one exception that I am aware of, really nasty human diseases are those which only infect humans by accident and have a different main host. The exception, HIV, is already evolving into a various strains, at least one of which is much less dangerous than the original.
However, if we ever consider a disease to be an existential threat, wiping out the other host species isn’t something we would have much practical difficulty with these days. We’re already considering that with Malaria, and that’s not an existential threat.
Then like archaeologists everywhere will conclude it was of religious significance.
At such a vast time distance there's likely nothing whatsoever left of us - except in the geological record as a few rare fossilised artefacts and environmental clues. We have a hard enough time understanding life a couple of thousand years back and religion is all too often trotted out as easy explanation for "we don't know why".
I'm curious if any natural being could ever last so long. To stand that sort of test of time would require an environmental design to withstand everything the cosmos can throw at a species. Humans won't last that long, but if they did it would be because they augmented themselves.
“Apes became conscious, heated up and destroyed their environment, forced back to wilderness, evolved out. Meh... who cares.”