Which medications in the drug class Varicella Vaccines are used in the treatment of Varicella-Zoster Virus (VZV)?

Updated: Feb 15, 2019
  • Author: Wayne E Anderson, DO, FAHS, FAAN; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Varicella Vaccines

These agents are used to induce active immunity.

The combined MMRV vaccine (ProQuad) has been shown to be associated with an increased risk of febrile seizure occurring 5-12 days following vaccination at a rate of 1 in 2300-2600 in children aged 12-23 months compared with separate MMR vaccine and varicella vaccine administered simultaneously. [14, 15] As a result, the CDC Advisory Committee on Immunization Practices (ACIP) recommends that separate MMR and varicella vaccines be used for the first dose, although providers or parents may opt to use the combined MMRV for the first dose after counseling regarding this risk. [16] MMRV is preferred for the second dose (at any age) or the first dose if given at age 48 months or older.

Data from postlicensure studies do not suggest that children aged 4-6 years who received the second dose of MMRV vaccine had an increased risk for febrile seizures after vaccination compared with children the same age who received MMR vaccine and varicella vaccine administered as separate injections at the same visit. [16]

Varicella virus vaccine (Varivax)

A live attenuated varicella virus prepared from the Oka/Merck strain. It is propagated in human diploid cell cultures (MRC-5). Each 0.5-mL dose (when reconstituted) contains 1350 PFU of varicella, sucrose, and gelatin; residual components of MRC-5 DNA and protein; and trace quantities of neomycin and fetal bovine serum. Indicated for vaccination against varicella in individuals >1 y.

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