I have a 4 week old and a 3 year old. My in laws are staying with us this month to help out with DC. My MIL has caught a D&V bug since yesterday, this morning I saw her cuddling the baby and the toddler when I came down from a lie in after staying up the night breastfeeding. I had a strong word with my DH to make sure she doesn’t hold the DCs until she’s better. I’ve been disinfecting like crazy since morning and paranoid they might catch it. Am I overreacting here? Is there anything I could possibly do to make sure no one else catches it?