FAMILY CHARONACEAE 



1275 



Beach et al., Poultry Science, IS, 1934, 

 218-226; Beauclette and Hudson, Science, 

 76, 1932, 34; Jour. Am. Vet. Med. Assoc, 

 82 (X.S. 35), 1933, 460-476; 55, 1939, 333- 

 339; Brandly, ibid., 88 (N.S. 41), 1936, 

 587-599; Jour. Inf. Dis., 57, 1935, 201- 

 206; Braudly and Bushnell, Poultry 

 Science, 13, 1934, 212-217; Burnet, Brit. 

 Jour. Exp. Path., 15, 1934, 52-55; Jour. 

 Exp. Med., 63, 1936, 685-701 ; Burnet and 

 Foley, Austral. Jour. Exp. Biol, and Med. 

 Sci., 19, 1941, 235-240; Gibbs, Jour. Am. 

 Vet. Med. Assoc, 81, (N.S. 34), 1932, 

 651-654; Massachusetts Agr. Exp. Sta., 



Bull. 295, 1933, ibid., Bull. 311, 1934; 

 Hinshaw et al., Poultry Science, 10, 1931, 

 375-382; Hudson and Beaudette, Science, 

 76, 1932, 34; Cornell Vet., 22, 1932, 70-74; 

 Kernohan, California Agr. Exp. Sta., 

 Bull. 494, 1930, 3-22 ; Jour. Am. Vet. Med. 

 Assoc, 78 (N.S. 31), 1931, 553-555; 

 Komarov and Beaudette, Poultry Sci- 

 ence, 11, 1932, 335-338 ; May and Tittsler, 

 Jour. Am. Vet. Med. Assoc, 67, (N.S. 20), 

 1925, 229-231; Schalm and Beach, Jour. 

 Inf. Dis., 56, 1935, 210-223; Seifried, 

 Jour. Exp. Med., 54, 1031, 817-826. 



Gentis III. Tortor gen. nov. 



Viruses of the Hog-Cholera Group, inducing diseases characterized by involvemer 

 of manj'^ tissues. Generic name from Latin tortor, tormentor. 

 The type species is Tortor suis spec. nov. 



Key to the species of genus Tortor. 



I. In roammals. 



A. Infecting swine. 



B. Infecting cattle. 



C. Infecting the horse. 



D. Infecting sheep. 



E. Infecting cat. 

 II. In birds. 



1. Tortor suis spec. nov. From Latin 

 sus, hog. 



Common names : Hog-cholera virus, 

 swine-fever virus. 



Host: SU I DAE— Sus scrofa L., do- 

 mestic swine. Wart hog (symptomless 

 carrier). 



Insusceptible species: Dog, cat, cow, 

 horse, donkey, sheep, goat, rabbit, guinea 

 pig, mouse, rat, goose, hen, duck, pigeon. 



Geographical distribution : Almost uni- 

 versal in pig-breeding countries, espe- 



1. Tortor suis. 



2. Tortor bovis. 



3. Tortor equorvm. 



4. Tortor equcs. 



5. Tortor ovis. 



6. Tortor felis. 



7. Tortor galli. 



8. Tortor fur ens. 



cially in Europe, the British Isles, North 

 and South America. 



Induced disease : In swine, after intra- 

 muscular injection, increased tempera- 

 ture and prostration within 2| to 3 days ; 

 later lymph nodes enlarged, sometimes 

 hemorrhagic ; hemorrhages under capsule 

 of kidneys. Virus may remain in blood 

 of recovered pigs for 10 months. Ac- 

 quired immuuit}' is lasting, but most 

 naturally infected animals die in newly 

 infected herds. Virus has been cultured 



