pretty good, especially for a jam game! The art was especially charming, and horrifying. I will say though, I wish that it had gotten more into the infection aspect and been more consistent with its own rules.
[Spoilers]
When the player gets infected, they seem to go from stage 1 to stage 3 immediately, and the only symptom they ever seem to have is dizziness. Was expecting the game to play up the hallucinations and paranoia with things like fake phone calls and visitors. You also only get infected by 1. messing up Onna's answers (this was really clever, and I would love to see more games do this), 2. not letting Hugo in so he breaks in, or 3. letting Ray in. I was just sure that letting Hugo in after you give him the towel would have meant he was infected, which means you are infected, which means you get to slowly go mad as the symptoms take hold. I would also expect him to exhibit some of the symptoms besides stage 3. And, as mentioned by another comment, since the spore storm event lasted the whole night and it was nearly morning by the time you let Hugo in if you've given him the towel, it really does seem strange that he's not infected. If any of this was intended to be explained by hallucinations, having the player character dialog indicate "severe paranoia" and an inexplicable desire to socialize would go a long way. The options filling up with "somewhere high" after you're already stage 3 was a good demonstration of it, but it was too little too late, imo.
I also would have liked to see more ARG elements in the website, rather than just an external version of the manual in the game files. But I understand that this was on a strict time budget since it was made for a jam--with what you had to work with, it really is nice, and I look forward to your future projects where you have the opportunity to expand on such mechanics. Keep up the good work!