Thank you for your query on Healthcare Magic.
There are chances of getting chickenpox
by the child if mother is not immune to chickenpox.
If mother is immune to chicken, the antibodies
will transfer to baby and protect the child against chickenpox approximately till the age of 1 year.
Prevention is to isolate the chickenpox and to serve him in a separate room.
In children, chickenpox is mild and usually subside within 1 week to 10 days.
Hope I have answered your query.