An 1872 report on equine influenza describes the disease as: "An epizootic specific fever of a very debilitating type, with inflammation of the respiratory mucous membrane, and less frequently of other organs, having an average duration of ten to fifteen days, and not conferring immunity from a second attack in subsequent epizootics." — James Law, Report of the Commissioner of Agriculture for the year 1872 Equine influenza is caused by several strains of the influenza A virus endemic to horses.
В докладе 1872 года о конском гриппе, заболевание описывается следующим образом: "An epizootic specific fever of a very debilitating type, with inflammation of the respiratory mucous membrane, and less frequently of other organs, having an average duration of ten to fifteen days, and not conferring immunity from a second attack in subsequent epizootics." — James Law, Report of the Commissioner of Agriculture for the year 1872 Конский грипп вызван несколькими штаммами вируса гриппа А, эндемичным для лошадей.