Safety and Immunogenicity of a Combination: Measles, Mumps, Rubella and Varicella Vaccine (ProQuad®)

2006 
Background: A combination measles, mumps, rubella, and varicella vaccine (ProQuad®, Merck & Co., Inc, West Point, PA) was evaluated in 5 clinical trials. Use of ProQuad® would result in fewer injections for children and would facilitate universal immunization against all 4 diseases. Objective: To describe the combined results obtained from the studies conducted during the clinical development program for ProQuad®. Methods: A total of 5833 healthy children, 12-23 months of age, and 399 healthy children, 4-6 years of age, received 1 or 2 doses of ProQuad® in 5 controlled clinical trials. M-M-R®II and VARIVAX® were used as the control for most studies. Safety was evaluated for 6 weeks postvaccination and immunogenicity was assessed 6 weeks after each dose by a sensitive assay (ELISA or gpELISA). Results: A single dose of ProQuad® in 12- to 23-month-old children was shown to be as immunogenic as a single dose of M-M-R®II and VARIVAX® and was generally well tolerated. ProQuad® can be used concomitantly with ot...
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