PIC is a 501(c)(3) nonprofit educational org that delivers data on infectious diseases and vaccines and unites doctors who support voluntary vaccination.
The chickenpox vaccine (varicella) can have side effects. Common side effects include fever, flu-like symptoms and a varicella-like rash.
A more serious potential side effect is seizure, which may occur in about 1/940 children vaccinated with this vaccine.
Parents, here's more information about this vaccine: