Yeah, I don't know anything about ways to get the law on your side on this. I just know if it were me, I'd be asking my mom to post something about being worried about her baby and asking her to share it around to her Bible study ladies. Right wing boomers don't care about "the other," but their friends' kids are by definition not the other. Also depending on what is causing OP to be immunocompromised, there may be online communities for their condition. Some medical groups are highly organized and motivated to advocate for people with their condition. They can make things very embarrassing for the landlord.