Strengthening FMD Prevention and Preparedness
The Swine Health Information Center (SHIC) is collaborating directly with USDA Ag Research Service on Plum Island, USDA-APHIS, National Pork Board, and other key researchers to help understand possible pathways to introducing FMD into the U.S. The goal is to find open windows for FMD to gain entrance and close them.
This research will determine the minimum infectious dose (MID) of foot and mouth disease (FMD) virus needed to infect pigs via feed ingredients using normal feeding behaviors. Simultaneously, this project will look at the effectiveness of possible mitigants being added to the feed to help neutralize the virus.
Part of previous research showed the potential for FMD to be transported via feed ingredients from China to the US through surviving the 37-day trip duration. This work used Seneca Valley A virus as a surrogate for FMD and suggests the ability for FMD to survive in multiple feed components including soybean meal, DDGS, lysine, choline, and vitamin D for the time necessary for transpacific passage to pig rearing regions. And past studies have shown pigs are highly susceptible to oral transfer of FMD when dosed under laboratory conditions.
To date, no study has looked at the dose needed to infect a pig via feed, using normal feeding behaviors. And the collaborations will enable the direct use of FMD instead of having to use a surrogate. Successful completion of the project will provide critical knowledge pertaining to the risk of introduction of FMD into the US pig production system by imported feed components as well as potential mitigation of that risk.