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Vaccine handling & storage

1. For how long can a reconstituted modified-live virus (MLV) vaccine remain at room temperature without losing activity?

At room temperature (e.g., 60°–80°F), some of the more sensitive MLV vaccines (especially CDV vaccine) may lose the ability to immunize within 2 to 3 hr following reconstitution. It is recommended that unused MLV vaccines be discarded 1 hr after reconstitution regardless of whether or not the product has been refrigerated.

These guidelines are supported by a generous educational grant from
Boehringer Ingelheim USA Inc., Merck Animal Health, and Zoetis.