Is there anyway to prevent a child from becoming ill after being around someone sick?

Question

I am curious if there are any homeopathic remedies to give a child to prevent them from becoming ill right after being around another sick child? Hand washing & influenza vaccine were put into practice, but I am wondering if there is anything that can be given to minimize the chance of getting ill from being around someone sick.
Thanks!

Answer 1

Try hand sanitizer, and don't be around other sick kids. Also, not touching your face, eyes or mouth; avioding very close contact with those who are sick; clean and disinfect surfaces often; and Eat a balanced diet and get proper rest

Answer 2

Washing + Keeping him a warm and clean environment + Vitamin C (juice) + good breakfast + monitor him in case he starts showing symptoms.
In case he gets ill, take necessary precautions - like medicines + go to the hospital.

Of course, make sure that vaccines have been/will given to the child.