I would have loved it if in the end he just had a normal STD haha.

She must have already been infected when they were screwing and she passed eggs to him. I am going to throw up again. LOL

Federico told Ling, when she was sitting down and vomited on the floor (immediately after the blood peeing shot). He said something like "we're both infected".
Federico pees blood, he comes out of the toilet and confronts Ling, who is vomiting on the floor. He then apologizes and sits with her. Then he makes it clear that there's something wrong with him, too.
"I don't discriminate between entertainment
and arthouse. A film is a goddam film."

Yeah, and he blames her at first for giving him an STDyeah, an STD makes you start peeing blood a few hours after infection. And he's supposedly a top science student chosen to go on this expedition?

That is a good idea, however Ling says something to the effect "You have them too!", so how would she know otherwise (if not because of the sex)?

AH YES! That's right! TOTALLY forgot about that scenethanks for reminding me
though I thought since he had a phobia, he DID indeed have an overactive imagination at the time & it really was his zipper.
The Thaw: 6/10
Good Dick:5.5/10
End of the Line: 7/10
Game Plan: 3/10
Proposal: 7.5/10

If you remember the incident where he freaked about a bug when putting on his pants and then said it was just his zipper, it wasn't his zipper (a "candiru" moment) that bit him.
"God's not supposed to be a hack horror writer." - In The Mouth Of Madness