The Agricultural Research Service (ARS) of the USDA has developed a vaccine candidate for African swine fever (PSA), a virus that has caused significant losses to the swine industry in Asia and Eastern Europe. The vaccine has been shown to effectively prevent and protect European and Asian pig breeds against the current Asian strain of the virus. The vaccine could be commercially produced and could potentially control the ongoing outbreak that threatens the global pork supply. The vaccine takes approximately one third of pigs to show immunity in the second week post-vaccination, with full protection achieved by the fourth week. The researchers will continue to determine the vaccine's safety and efficacy under commercial production conditions and are working closely with a commercial partner in Vietnam.