according to TCM, it can cause more pghlem and cough will worsen. actually I think it's because it's harder to digest when a kid is not well. fish will be a better option. also, with flu, nose might be blocked so some easy to digest food will be a better choice.
Western vs TCM doctors have different views. in fact, chicken soup is good for flu. my girl abstain fron lots of food. just keep her diet light and digestable
It might be harder for the little one to digest them when he’s sick.
From what i know is they causes more phlegm especially chicken.