The USDA Center for Veterinary Biologics released a draft notice notifying veterinary biologics licensees, permittees, and applicants of a change in labeling of veterinary biologics containing swine influenza virus or equine influenza virus. The notice does not pertain to autogenous products containing equine and/or swine influenza virus.

The changes would require labels to contain information regarding the subtypes and strains, or the parent strain of recombinant/resortant/subunit products.

It is the opinion of the AVMA that the proposal will likely enhance effective vaccination strategies for currently circulating influenza viruses in swine and horses.