Yes you are right that mumps
is an infective condition.
Mumps is highly contagious and has a rapid spread among members living in close quarters.
The virus most commonly is spread directly from one person to another via respiratory droplets.
Less frequently, the respiratory droplets may land on fomites (sheets, pillows, clothing) and then be transmitted via hand-to-mouth contact after touching such items.
The incubation period
from exposure to the virus and onset of symptoms is approximately 14-18 days.
So all you can do now is to wait and watch.
If your child develops any fever
of pain or swelling, I would advise you to visit a dermatologist
for proper assessment and treatment.
Hope it helps
Best wishes for a speedy recovery
Dr Geetika Paul