ASF vaccine effective in piglets as young as 4 weeks

Early vaccination should help reduce the spread of African swine fever in countries where the disease is endemic, researcher says.

Emma Penrod
March 25, 2026
Young piglet held in hands during veterinary examination or agricultural inspection
budabar | BigStock.com

A commercially approved African swine fever (ASF) vaccine could be safe to use in piglets as young as four weeks of age, according to research published in Scientific Reports.

According to the paper, a live attenuated vaccine based on the Georgia 2010 strain of the ASF virus performed as well in four-week-old piglets as in eight- and 10-week-old piglets. The piglets showed no signs of adverse effects after vaccination, and withstood direct exposure to the virus 28 days later.

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