What is the storage requirement for the Zostavax vaccine?

Zostavax, the shingles vaccine, has specific storage requirements to maintain its efficacy and ensure patient safety. This vaccine must be kept in a freezer at temperatures between -50°F to -58°F (-45°C to -50°C). This cold chain storage is crucial because if the vaccine is not stored at the correct temperature, its potency can be compromised, which would lessen its effectiveness when administered to patients.

Storing Zostavax in a refrigerator, at room temperature, or as shelf stable is not suitable and would lead to degradation of the vaccine. Therefore, the requirement for a freezer ensures that the vaccine remains effective and provides adequate protection against shingles for those who receive it.