Receipt of distinct antiviral prescription drugs (acyclovir, famciclovir, or valacyclovir) 24 hrs before vaccination is a precaution for VAR or MMRV vaccination. These antiviral drugs needs to be prevented for fourteen days immediately after vaccination if at all possible. Merck along with the Centers for Ailment Handle and Prevention (CDC) https://johng146pqr9.hyperionwiki.com/user