My sons school apparently has an outbreak of norovirus he said loads of people off and more people gone home sick today. I suffer with emetophobia so now my anxiety is through the roof that he is going to catch it. Would it be sensible to keep him off to avoid him getting it? (I realise he could already have it now!) but then if I do that how long would I keep him off because it could still be around for ages. I really don't know what to do.