"I just heard stuff on the news that it weakens the immune system or something and that it's related to STD's."
Not sure why this is in the Mysterious lost civilisations but anyway the S.A.R.S is related to the common cold, flu etc. This piece from the xgate
should answer your questions about it.
xgate.abovetopsecret.com...
As for being predicted, if they did say it was similar to Aids that would probably be the next bad thing not this