More SHIC-funded ASF research results reported

Research looks at the potential risk of semen movements during an outbreak.


Swine Health Information Center

via National Hog Farmer - Nov 15, 2021


The Swine Health Information Center (SHIC) has released additional research results from a multi-phase African swine fever (ASF) field project in Vietnam. The project is being funded by a 2019 grant from USDA’s Foreign Agricultural Service division that was awarded to SHIC. National Pork Producers Council provided additional assistance.


One completed study evaluated the performance of ASF serum and/or oral fluid ELISAs for use in the surveillance and monitoring of ASF outbreaks in commercial farms in Vietnam and in preparation for the virus becoming endemic in the U.S. This study shows there is no single best diagnostic approach for ASF surveillance and demonstrated that the combined use of the Tetracore qPCR and indirect ELISA tests and serum/oral fluid sampling increase efficiency of ASF disease surveillance.


Another completed study modeled the risk of introducing ASF to a sow farm as a result of semen movement from apparently healthy boar studs located in an ASF disease control area. Results indicated the risk is negligible to low given study parameters, however, several factors with the potential to impact these results were acknowledged.


The study, “Evaluation of the diagnostic performance of an ASF serum/oral fluid antibody ELISAs under field conditions in Vietnam,” evaluated performance of these tests for surveillance and monitoring of outbreaks on commercial farms. A collaborative project between Innoceleris LLC and Tetracore Inc., the work addresses the complicated interpretation of ASF diagnostic results. A field team from Hanoi University collected 398 paired serum/oral fluid samples from individual animals, including 100 samples from 34 ASF-acute farms, 98 samples from 47 ASF-chronic farms, and 200 samples from 20 ASF-negative farms...