Is Priorix Tetra approved by FDA?

As of my last knowledge update in October 2023, Priorix Tetra, a vaccine for measles, mumps, rubella, and varicella (chickenpox), is not approved by the FDA. However, it is widely used in other countries and may have received approval from regulatory agencies outside the United States. For the most current information, it’s best to consult the FDA's official website or recent announcements.