the chickenpox vaccine is a shot that can protect nearly everyone who gets it from catching chickenpox. the vaccine is made from the live but weakened or attenuated virus. viruses that have been attenuated are less virulent than viruses that are not. although the virus in the chickenpox vaccine is generally incapable of causing a disease it still stimulates a response from the body's immune system. that response is what gives someone who's had a shot for chickenpox immunity from the illness
what is the chickenpox vaccine?