Novartis Animal Vaccines announced Aug. 19 the conditional licensing and availability of the only antibody product approved by the USDA to help control disease caused by West Nile virus (WNV) in equids. This product helps an exposed animal by increasing the antibody level in the circulatory system, which enhances an animal’s ability to neutralize virus already in the blood.

For a product to get USDA conditional approval, the company must show that the product is safe, pure, and that there’s reasonable expectation of efficacy. West Nile Virus Antibody is a prescription antiserum product, administered intravenously by a licensed veterinarian. (An antibody product that is currently used by veterinarians to treat clinical signs for WNV, but is not labeled for this use, is HiGamm-Equi; see article

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