It is well known that infection with chickepox confer lifelong immunity with protection from second attack. Can re-infection with chickepox occur (not as shingles)?
Yes it is, from different genotypes or wild type. People usually only get the disease once. Although reinfections by the virus occur but not common, these reinfections usually do not cause any symptoms, a second infection may occur only in immunocompromised people (in children and adults who are being immunosuppressed for a transplant or who have AIDS)