Equine Influenza. Adynamic Catarrhal Fever of Solipcds. 133 



Pneumonia : 



Croupous Fibrinous. 



From climatic vicissi- 

 tude, exposure, etc. 

 Attacks exposed ani- 

 mals only, and all at 

 once 



Prevails in inclement 

 seasons, spring, au- 

 tumn, (Winter). 



Rigor may be late : after 

 exudation has c o m- 

 menced 



Sets in slowly or with 

 acute congestion ; ap- 

 petite and pulse vary 

 with inflammation 



Nasal discharge, watery 

 or rusty, later muco- 

 purulent 



Eye pink, dark red 



Temperature rises with 

 inflammation 



Swelling of limbs rare 



Crepitation more con- 

 stant around the exu- 

 dation 



Exudation (Hepatisa- 

 tion) in lung, lower, 

 posterior, anterior, or 

 central, usually undi- 

 vided area 



If pleurisy effusion may 

 be copious 



Pneumonia : Pneumonia : 



Contagious, of Equine r t? ■ T n 



& . ! •' 1 of Equine Influenza. 



Animals. 



Slow succession of cases Rapid succession of 

 in the same stable, cases in the same 

 irrespective of climate stable or locality, irre- 



or exposure spective of climate or 



exposure 



Any season : worse in in- Any season : worse in 

 clement season inclement season 



Infection from close 

 proximity, contact, 

 stall, manger, rack, 

 bucket, trough, etc.: 

 Spread slow 



Carried in manure, on 

 harness, wagons, 

 clothes, etc. 



Incubation 3-10 days 



Rigor early and well 

 marked, before exuda- 

 tion 



Sets in slowly, cough, 

 dulness, impaired ap- 

 etite, pulse rapid, pros- 

 tration slight 



Nasal discharge, yellow. 



Eye yellow, rarely swol- 

 len or waterv 



Temperature rises early 

 and extremely, before 

 exudation, io4°-io7°_ 



Limbs swell rarely 



Rheumatoid arthritis 

 may follow 



Crepitation less constant 

 around theexudation_ 



Exudate affects lower or 

 anterior border, of 

 lung ; often in small 

 isolated areas or 

 around bronchia ; less 

 blood engorgement 

 than in fibrinous pneu- 

 monia 



Pleural effusion i n f r e - 

 quent, or limited, 

 though pleurisy is 

 common 



Infection spreads widely 

 and rapidly through 

 the air. Spread rapid 

 and often general 



Carried in manure, on 

 harness, wagons, 



clothes, etc. 



Incubation, 1-2 days. 



Rigor not always well 

 marked 



Profound nervous pros- 

 tration like opium 

 poisoning, appearing 

 early and suddenly 



Nasal discharge, watery, 

 may become yellow __ 



E)'elids bloodshot (pink 

 eye), violet, madder 

 hue, swollen, watery, 

 closed 



Temperature rises early 

 and extremely, in 

 some hours io4°-io7°. 



Limbs often swell great- 

 ly 



Rheumatoid arthritis 

 may set in ; often in 

 advanced stage 



Crepitation may escape 

 recognition 



Exudate less granular 

 than in pneumonia ; 

 forms in or gravitates 

 to lower part of lung. 

 Congestion passive 



Pleural effusion frequent 

 and abundant 



