Study on the Verotoxin-producing Escherichia coli. Isolation of the Bacteria from Deer Dung.:Isolation of the Bacteria from Deer Dung
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To identify the source and route of verotoxin-producing Escherichia coli (VTEC) infection in humans, we tried to isolate VTEC from fresh deer dung collected from free-range animals in two parks during the period from August 1997 to January 1998. The results are presented below.<BR> 1) VTEC were isolated from 21 of 200 deer dung samples (10.5%), consisting of 15 of 100 samples (15.0%) collected in park A and 6 of 100 samples (6.0%) collected in park B, suggesting that the incidence of VTEC isolation differs depending on location.<BR> 2) With respect to typing of verotoxin, the 21 isolated VTEC strains consisted of 10 strains (47.6 %) as VT1 producer, 5 strains (23.8%) as VT2 producer, and 6 strains (28.6%) as double producer of both types.<BR>3) With respect to serogroup of the isolated VTEC strains, 2 strains belonged to O128: H2, 1 strain each belonged to the O8: H10, O128: H12, and O169: HUT groups. The remaining 16 strains failed to be identified as particular serotypes. Regarding local distribution of the serotype, in park A, 1 strain each belonged to the O128: H2, O8: H10, and O169: HUT groups. The remaining 12 strains did not clearly show particular serotypes. In park B, 2 strains belonged to O128: H2, and 4 strains failed to show particular serotypes. The remaining 1 strains showed autoagglutination.<BR>In conclusion, we isolated VTEC strains from deer that showed types of toxin and serogroups identical to those of human VTEC. Therefore, VTEC found in deer dung could well be a source of VTEC-infectious diseases in humans.
- The Japanese Association for Infectious Diseasesの論文
The Japanese Association for Infectious Diseases | 論文
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