Failure of serological testing for antigens A and C of Streptococcus equi subspecies equi to identify guttural pouch carriers.
Andy E DurhamJeremy Kemp-SymondsPublished in: Equine veterinary journal (2020)
Caution is advised when relying on seronegativity to antigens A and C in order to discount the possibility of chronic carriage of S. equi in guttural pouches.