Our family has been struck down with what I think is norovirus, starting with DD1 age 3.5 who vomited for 18 hours and is now back to her old self. DD2 starting vomiting at 10pm last night and has not stopped since. Every hour, longest stretch (once) 2 hours and more recently every 30 mins. She can’t keep water/breast milk down and is sleeping in between vomiting all day. No wet nappy since 10am.
Have made squash ice lollies that are currently freezing and will try some rehydration sachet in a calpol syringe when she wakes up but she can’t keep anything down so I’m not confident this will be any different.
When should I be seriously concerned ?