Answers are grounded in this paper and cite their sources.
Three hundred sera were collected from horses in various parts of Mongolia in 2007 and seroepidemiological surveys for several equine viruses performed on them. Equid herpesvirus 1 and equine rhinitis A virus were prevalent, and equine arteritis virus and equid herpesvirus 3 were detected over a wide area though their rates of antibody-positivity were not high. Equine infectious anemia was distributed locally. The rates of horses antibody-positive for Japanese encephalitis virus and equine influenza virus were low, but these were detected. Bovine coronavirus antibodies were detected at a high rate, but it was not clear whether they were due to horse coronavirus.
No takes yet. Share an insight, caveat, or question.
Pagamjav et al. (2011) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: