Zoetis has announced that a batch of the bluetongue vaccines, Zulvac® 8 Bovis and Zulvac® 8 Ovis, is expected to become available to veterinary practices in mid-July, in time to manage the risk of an outbreak predicted by Defra to reach mainland UK by the late summer. Zoetis has announced that a batch of the bluetongue vaccines, Zulvac® 8 Bovis and Zulvac® 8 Ovis, is expected to become available to veterinary practices in mid-July, in time to manage the risk of an outbreak predicted by Defra to reach mainland UK by the late summer. 

The company says the quantity of vaccine will not be unlimited and that it will strive to achieve as widespread availability as possible.

The two vaccines (Bovis for cattle and Ovis for sheep) are licensed to “prevent viraemia” caused by bluetongue virus serotype 8 (BTV-8). Prevention of viraemia, the presence of bluetongue virus in the blood, ensures no onward spread of infection via the blood sucking Culicoides midge.

The vaccines can be used in cattle from three months of age, or six weeks in sheep, requiring two doses three weeks apart in either species. Each dose is 2ml administered intramuscularly in cattle or subcutaneously in sheep, and onset of immunity is 25 days after the second dose. The vaccine provides immunity for a full 12 months.

The British Veterinary Association (BVA), British Cattle Veterinary Association (BCVA), Goat Veterinary Society (GVS), and Sheep Veterinary Society (SVS) welcomed the announcement from Zoetis, and another from MSD, but sought clarification about the cost and the amount of vaccine likely to be available in July and thereafter.

BVA President Sean Wensley said: "We welcome the announcement that vaccine will be available in time to meet potential demand. This disease seriously affects animal health and welfare as well as the productivity of livestock, and vaccination is the key control. While it is good news that vaccine will be available, we know that both farmers and vets will have questions about cost and whether there will a limit to the amount of vaccine available in July. It would be helpful to have these questions clarified as soon as possible."

Photo by Fourrure (http://www.boulesdefourrure.fr) [CC BY-SA 2.0], via Wikimedia Commons

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