Porcine morbillivirus not detected in U.S. swine population

After identifying new virus in fetuses from Mexico, ISU VDL tested 450 clinical samples from all over the United States.


Source: Swine Health Information Center

via National Hog Farmer - Jun 22, 2022


The Iowa State University Veterinary Diagnostic Lab received 22 porcine fetuses from six litters originating in Mexico in the spring of 2020. After extensive testing, metagenomic sequencing identified a new virus in the genus Morbillivirus (porcine morbillivirus or PoMV) from the fetal tissues. Other currently known members in the genus Morbillivirus, including measles virus, rinderpest virus, peste des petits ruminants virus, canine distemper virus, phocine distemper virus, cetacean morbillivirus and feline morbillivirus, are highly contagious pathogens and can cause serious human and animal diseases.


Although PoMV was identified from porcine cases with fetal death, encephalitis and placentitis, the etiological role of PoMV had not been determined. Further, it was unknown if PoMV was present in the U.S. swine population. Researchers from ISU and the USDA Agricultural Research Service investigated these gaps in knowledge with SHIC funding.


To determine if PoMV was present in the US. swine population, various tissues from neonatal mortalities and mummified fetus banked samples submitted to the ISU VDL were subjected to PoMV rRT-PCR. A total of 450 clinical samples from all over the United States (brains, lungs, and spleens from neonatal mortalities, stillbirths, and mummified fetuses) were tested. Testing to date has not detected PoMV in U.S. swine samples...