Merck Faces Varicella-Zoster Virus Supply Shortage For Vaccine Production

Merck does not expect problems in the production of bulk varicella-zoster virus vaccine to affect near-term supplies of individual products that contain the virus - the varicella vaccine Varivax, the herpes zoster vaccine Zostavax, and the measles, mumps, rubella and varicella (MMR-V) combination ProQuad