Lead Sponsor

GlaxoSmithKline

Collaborators

Age

1 - No limit years

Sex

ALL

Healthy Volunteers

Yes

•Male or female child at least one year of age, born on or after July 1 2003.
•Residence in Germany
•At least one previous well-child visit to the practice
•Written informed consent obtained from parents/guardians of the subject as per local requirements.
•Specific inclusion criterion for cases:
•Suspected primary varicella disease (i.e. chickenpox) at the time of study entry

•Ineligible for varicella vaccination, due to any medical contraindication. These contraindications are:
•* History of hypersensitivity to any of the components of the vaccines
•* Congenital or acquired immunodeficiency
•* Treatment with immunosuppressive therapy
•* HIV-infected patients, when CD4 \< 25% of total lymphocytes
•* Previous history of chickenpox by physician record or parental report.
•* Lack of documented vaccination history (written or computerised practice records or child's vaccination card/booklet).