_Croupous Fibrinous._ _Contagious, of Equine _of Equine Influenza_. Animals._ From climatic Slow succession of Rapid succession of vicissitude, cases in the same cases in the same exposure, etc. stable, irrespective stable or locality, Attacks exposed of climate or irrespective of animals only, and all exposure climate or exposure at once Prevails in inclement Any season: worse in Any season: worse in seasons, spring, inclement season inclement season autumn, (Winter) Infection from close Infection spreads proximity, contact, widely and rapidly stall, manger, rack, through the air. bucket, trough, etc.: Spread rapid and Spread slow often general Carried in manure, on Carried in manure, on harness, wagons, harness, wagons, clothes, etc. clothes, etc. Incubation, 3–10 days Incubation, 1–2 days Rigor may be late: Rigor early and well Rigor not always well after exudation has marked, before marked commenced exudation Sets in slowly or with Sets in slowly, cough, Profound nervous acute congestion; dulness, impaired prostration like appetite and pulse appetite, pulse opium poisoning, vary with rapid, prostration appearing early and inflammation slight suddenly Nasal discharge, watery Nasal discharge, yellow Nasal discharge, or rusty, later watery, may become muco-purulent yellow Eye pink, dark red Eye yellow, rarely Eyelids bloodshot (pink swollen or watery eye), violet, madder hue, swollen, watery, closed Temperature rises with Temperature rises early Temperature rises early inflammation and extremely, before and extremely, in exudation, 104°–107° some hours, 104°–107° Swelling of limbs rare Limbs swell rarely Limbs often swell greatly Rheumatoid arthritis Rheumatoid arthritis may follow may set in; often in advanced stage Crepitation more Crepitation less Crepitation may escape constant around the constant around the recognition exudation exudation