Am I in the wrong?

A little backstory. My younger brother (25) lives with my husband, our three kids, and myself. He went through a rough patch recently due to no fault of his own and he needed a place to go. We’ve always been close so my husband and I had no issue with it. He sleeps on our couch’s pullout bed because we don’t have a spare room. He helps out very minimally financially, which was my husband and I’s idea. We want him to be able to save up and get back on his feet sooner. Again, no issues or hard feelings there. He’s been here around two months and it’s gone very smoothly so far.

Until a week ago, my two youngest (3 and 1) caught covid. Thankfully nobody else had it. I’m a stay at home mom so it didn’t really disrupt our daily routine at all. My brother knew they had covid so I assumed that if he was concerned, he would have gotten a hotel for a few days. He didn’t seem worried so I thought all was fine. Yesterday, he tested positive so that means he obviously has to miss some work. And he’s been kind of rude to me about it. He said that I was inconsiderate and that I should have kept the kids out of shared spaces while they were sick. He sleeps in our living room, so he thinks I should have kept them in their bedrooms the entire week they were sick. Most of their toys are in the living room, and they just wanted to lay on a blanket on the floor and watch tv most of the time. We don’t do TV’s in bedrooms, so the living room was the only option for that. He works until 6pm and the kids bedtime is 7:30. I made sure to have the kids fed and bathed and I used Lysol all over the living room every day before he got home. I did my best to be as safe as possible.

But now he’s making me feel really guilty. I know he needs the money right now and I know he’s stressed about missing work. I got pretty rude with him for the things he was saying to me last night. Should I be the one to apologize?