Stomach bug going around job

It’s a stomach bug going around at my job and it’s really irking me. I’m trying to be calm about it. I’ve been handling this phobia a lot better than I used to growing up. I work in a psych facility where the patients do not have the best hygiene and don’t know boundaries to the point where they are so close to your face, so it’s spreading like wildfire.

I’ve been sanitizing my desk, desk phone, the door knob to my office, keeping my mask on at ALL times especially when I have to meet with a patient, keeping my distance, I’ve been really careful about not touching my face, and washing my hands frequently. What are some other ways that I can protect myself until this bug is gone from the facility? Has anyone else heard about this hack of drinking grape juice or something like that to help prevent you from getting sick? I’ve gotten sick (not with a stomach bug) from the facility before, so I definitely don’t want to get sick now.

A handful of patients have been v* and having d. One patient literally got s a few hours ago in the middle of the hall way, I don’t even want to walk near that area because I’m pretty sure housekeeping didn’t do the proper ways to clean and sanitize. I hate that I even had to hear when he got s*. I’m still a little shaken up but I calmed down a little. I’m just dreading coming into work for the time being, I really don’t wanna get sick.