How to know if my baby has a healthy immune system? should i give probiotics if not ? my baby is 10 month old

Healthy: If child has been healthy you can assume his immune system is functioning well. The probiotics will not enhance his immune system.

Likely fine: Kids with the immunodeficiency disorders are often picked up by the age of 4-5 months due to recurrent and significant illnesses like bone infections and meningitis.Probiotics often allow for a good balance of beneficial gut bacteria but they do not boost anything. Having a happy gut can help you tolerate minor gut ailments and viruses with less symptoms.