Stomach Flu

So my boyfriend came down sick about 2/4 & on 2/5 he began throwing up after anything he ate. I saw him on 2/4, and I feel perfectly fine still but he is still throwing up after drinking anything and hasn’t eaten in days. I want to see him to just take care of him (from a distance) but I don’t want to risk seeing him now and then catch it. Any advice?

TIA 💛