Dr Phil Kieran: How can I help my child recover after norovirus? 

Norovirus is a small, highly contagious virus that causes ‘winter vomiting illness’. Picture: iStock.

We had a dose of norovirus in the family two weeks ago. My two-year-old was the most seriously affected and has only just recovered. He’s off-form and barely interested in his food. Is there a tonic I could give him?

Norovirus is a small, highly contagious virus that causes ‘winter vomiting illness’. Most of us have heard of this condition during outbreaks in hospitals when people are advised not to visit for fear of passing it on.