How to keep baby from getting sick?

Any advice on how to keep baby from getting sick?

A couple days ago Dad said he wasn’t feeling too well, his stomach was bugging him. Me and baby slept in a different room until he felt better just to be safe, and dad washed his hands before touching baby. Today I started feeling sick. I’ve been trying really hard not to throw up all day and just feel terrible all around. I have tomorrow off from work, no one to babysit. I’ve been doing my best to minimize how much I touch him, I don’t breathe in his direction and I’m washing my hands a bunch. Any other tips, just in case this is contagious? I don’t want my 7 week old getting sick.