CDC: Varicella Vaccine - Covers effectiveness, U.S. recommended immunization schedules, precautions for administration, and answers to clinicians' and patients' questions about the chickenpox vaccine. - http://www.cdc.gov/nip/vaccine/varicella/default.htm
Varivax - Full prescribing information from RxList. - http://www.rxlist.com/cgi/generic2/varivax.htm