What is the disparity between chickenpox and shingles?

Primary vs return: Chickenpox is the primary infection of a patient by the wild varicella virus.It has an incubation phase, a blood phase, is spread in saliva and in material from the spots all over. After the primary infection it goes into hibernation in nerve clusters along the spinal cord. It can emerge from hibernation years later as a localized outbreak shingles.Then, only debris from the spots has the virus.