PFIZER Animal Health said its swine influenza vaccine, a killed virus vaccine developed and made at its plant in Lincoln, Nebraska, has been approved by the US Department of Agriculture for vaccination of healthy swine, including pregnant sows and gilts, three weeks of age or older against subtype H1N1.
Pfizer becomes the first US biologics manufacturer to receive a USDA conditional license for this new vaccine.
Because the product license is conditional, efficacy and/or potency of this product have not been fully demonstrated.
Pfizer says the new vaccine is a freeze-dried preparation and requires a 2-millilitre dose and a booster after three weeks.
Steve Sornsen, director of veterinary services for Pfizer Animal Health, said serologic studies showed an increase in antibody titers against the pandemic H1N1 strain.
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