First H1N1 swine vaccine licensed by U.S.D.A.

by Bryan Salvage
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WASHINGTON — On Dec. 11, the U.S. Department of Agriculture announced it had issued a conditional license to Pfizer Animal Health, of Lincoln, Neb., for a pandemic H1N1 influenza vaccine intended to vaccinate pigs against the 2009 pandemic H1N1 influenza virus. This is the first pandemic H1N1 influenza vaccine licensed by U.S.D.A.

"U.S.D.A. and its partners in animal health have worked hard to expedite the development of a vaccine for the 2009 pandemic H1N1 influenza virus," said Cindy Smith, administrator of the U.S.D.A. Animal and Plant Health Inspection Service. "This vaccine will help producers protect their swine herds and protect themselves from economic losses in the event that their herds contract this virus."

The Center for Veterinary Biologics informed interested parties on June 2 that the agency would provide pre-approved Master Seed Viruses to be used for development of a conditionally licensed pandemic H1N1 vaccine to protect swine. In the event that the pandemic H1N1 virus would become an emerging disease in swine, the availability of pre-approved Master Seed Viruses would facilitate a more rapid response should vaccine production be warranted.

On Sept. 10, Department of Agriculture Secretary Tom Vilsack announced U.S.D.A. was expediting development of the H1N1 vaccine to protect swine.

U.S.D.A.'s Animal and Plant Health Inspection Service issues conditional licenses for veterinary biologics products to meet an emergency situation or limited market, local situation or special circumstance. The special circumstance addressed here is the need for a product to vaccinate pigs against the 2009 pandemic H1N1 virus. Under these regulations, a product that is shown to be pure and safe and that demonstrates a reasonable expectation of efficacy may be licensed while data to establish efficacy and potency are still being obtained.

U.S.D.A. relays conditional licenses are generally issued with restrictions and for a limited period of time. In this, case, the product has been issued a conditional license for one year. At the end of the conditional-license period, data obtained in support of the product’s performance will be evaluated to determine if the conditional license should be renewed or if a regular product license may be issued. The product is restricted to use by a veterinarian in those states where use of the product has been approved by the appropriate state regulatory authorities.

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