FAMILY II. TREPONEMATACEAE 



901 



Pathogenicity: White mice and white 

 rats are susceptible, but the guinea pig, 

 rabbit, dog and fowl are reported as refrac- 

 tory. 



Comment: Brumpt (Precis de Parasitol., 

 3rd ed., Paris, 1936) regarded Borrelia neo- 

 tropicalis Steinhaus as identical with Bor- 

 relia venezuelensis Brumpt; this has been 

 confirmed by Davis (Internat. Bull, of Bact. 

 Nomen. and Taxon., 5, 1955, 107). 



Habitat: Found as a cause of relapsing 

 fever in Panama, Colombia, Venezuela and 

 Ecuador. 



10. Borrelia persica (Dschunkowskj-, 

 1913) Steinhaus, 1946. (Spirochneta persica 

 Dschunkowsk}', Deutsch. med. Wochnschr., 

 39, 1913, 419; Steinhaus, Insect Microbiol- 

 ogy, 1946, 453.) 



per'si.ca. L. adj. persicus Persian. 



Transmitted by Ornithodoros tholozani. 



Pathogenicity: Varies considerably with 

 the strain, but especiallj^ pathogenic for 

 the guinea pig. 



Habitat: Found as a cause of relapsing 

 fever in Iran (Persia). The vector of this 

 species has a wide distribution: it is known 

 from the Egyptian Western Desert, Cyprus, 

 Israel, Iraq and the U.S.S.R. to the western 

 border of China, Afghanistan and Kashmir. 



11. Borrelia turicatae (Brumpt, 1933) 

 Steinhaus, 1946. (Spirochaeta turicatae 

 Brumpt, Compt. rend. Soc. Biol., Paris, 

 US, 1933, 1369; Steinhaus, Insect Micro- 

 biology, 1946, 453.) 



tu.ri.ca'tae. M.L. gen. noun turicatae of 

 turicata, a Mexican tick. 



Transmitted by Ornithodoros turicata; not 

 transmitted by other species of Ornithodoros 

 from the Western Hemisphere. 



Pathogenicity: Produces characteristic 

 relapses in adult white mice and guinea pigs. 



Habitat: Found as a cause of relapsing 

 fever in Me.xico, New Mexico, Kansas, Ok- 

 lahoma and Texas. 



12. Borrelia caucasica (Maruashvili, 

 1945) Davis, comb. nov. (Spirochaeta cau- 

 casica Maruashvili, Med. Parasit., Parasitic 

 Dis., H, 1945, 24.) 



cau.ca'si.ca. M.L. adj. caucasicus per- 

 taining to the Caucasus. 

 Transmitted by Ornithodoros verrucosus. 

 Pathogenicity: Pathogenic for the guinea 



pig- 



Source: From Pallasinus erythourus cau- 

 casiciis, Apodemus syhaticus and Mus mus- 

 culus. 



Habitat: Found as a cause of relapsing 

 fever in the Caucasus. 



13. Borrelia novyi (Schellack, 1907) 

 Bergey et al., 1925. (Spirochaete from re- 

 lapsing fever, Norris, Pappenheimer and 

 Flournoy, Jour. Inf. Dis., 3, 1906, 2^; Spiro- 

 chaeta novyi Schellack, Arb. kaiserl, Gesund- 

 heitsamte, 27, 1907, 199 and 364; Bergey et 

 al.. Manual, 2nd ed., 1925, 434.) 



no'vy.i. M.L. gen. noun novyi of Novy; 

 named for F. G. Novy, an American bac- 

 teriologist. 



Morphologically similar to Borrelia re- 

 cur rentis. 



Growth occurs under the same conditions 

 as for Borrelia recurrentis. 



Antigenically distinct from other relap- 

 sing-fever organisms. 



Pathogenic for monkeys, white rats and 

 white mice. 



Arthropod vectors are unknown. 



Source: From a patient in Bellevue Hos- 

 pital, New York. Origin of infection un- 

 known. 



14. Borrelia kochii (Novy, 1907) Bergey 

 et al., 1925. (Spirochaeta kochi (sic) Novy, 

 Proc. Path. Soc. Philadelphia, 10 (N.S.), 

 1907, 1; Bergey et al., Manual, 2nd ed., 

 1925, 434.) 



ko'chi.i. M.L. gen. noun kochii of Koch; 

 named for Dr. Robert Koch, who was the 

 first to observe spirochetes in East African 

 relapsing fever. 



Morphologically similar to Borrelia re- 

 currentis. 



Growth occurs under the same conditions 

 as for Borrelia recurrentis. 



Antigenically distinct from both Borrelia 

 recurrentis and B. duttonii. 



Pathogenic for mice and rats. 



No record of an arthropod vector. 



Comment: Regarded by some investi- 



