The USDA has suspended the movement of live swine and swine products from Puerto Rico and the U.S. Virgin Islands to the mainland U.S. in an effort to prevent the spread of African swine fever (ASF). The suspension is part of an effort to establish an animal disease protection zone in Puerto Rico and the Virgin Islands. So far, ASF has not been detected in these areas. The USDA is also providing technical advice and assistance to the Dominican Republic in surveillance, quarantine, depopulation, and disposal methods, and bolstering in-country testing capacity. There is currently no vaccine for ASF, and any potential vaccine could be three years in the making. The USDA is taking these steps out of an abundance of caution to safeguard the U.S. swine herd and protect the livelihoods of U.S. pork producers.