SORD and infection: Similarly, in 2015, in 2017 and 2021 other authors proposed comparable studies [17,19,21] that highlighted the main trends around which a EqHV infection is oriented: first, is the evolution of the viremic load, second the increase in NS3 antibodies (Ab) at seroconversion, and third the variation in concentration of specific liver enzymes as the gamma-glutamyl transferase (GGT) and the sorbitol dehydrogenase (SDH), which are apparently the most significant in terms of variation compared to the reference intervals, when analyzing EqHV infections (Table 3).