OTHER VIRUSES
* Coxsackie viruses
Experimental vectors.—Periplaneta americana, U.S.A. (Fischer and Syverton, 1951a, 1957): Recently Fischer and Syverton (1957) found that after feeding a single meal of Coxsackie virus to Periplaneta americana, the gastrointestinal tracts of the insects, which were removed at 5-day intervals up to 20 days, contained sufficient virus to paralyze and kill test mice. Cockroach salivary glands, removed 5 days after the insects had fed, contained the virus which caused paralysis and death in test mice; mice were also infected by virus obtained from salivary glands removed from the insects 10 and 20 days after the cockroaches had fed once on the virus. The virus was also isolated from the cockroaches' feces and rarely from the fat bodies and reproductive organs. Fischer and Syverton concluded that it is possible that cockroaches could acquire the virus, by feeding on mammalian excreta, maintain it for a period of time, and transmit it by contamination of food. The virus could also be transmitted through the feces of wild mice if the mice happened to feed on virus-infected cockroaches.
* Mouse encephalomyelitis virus
Experimental vectors.—Periplaneta americana, U.S.A. (Syverton and Fischer, 1950).
* Yellow-fever virus
Experimental vectors.—Blattella germanica, Great Britain? (Findlay and MacCallum, 1939).
[VII. BACTERIA ASSOCIATED WITH COCKROACHES]
Classification of the bacteria follows Breed et al. (1948). Synonymy in most cases was taken from the same source. Names of bacteria preceded by the symbol † are either not listed by Breed et al. or are stated by them to be insufficiently characterized for definite classification. Use of asterisk is explained in footnote [3], page [4].
Phylum SCHIZOPHYTA
Class SCHIZOMYCETES
Order EUBACTERIALES
Family PSEUDOMONADACEAE