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Improved Isolation of Vibrio vulnificus from Seawater and Sediment with Cellobiose-Colistin Agar
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ABSTRACT
An improved selective medium, cellobiose-colistin (CC) agar, gave a significantly higher (
P
< 0.05) isolation rate of
Vibrio vulnificus
from water and sediment samples than did modified cellobiose-polymyxin B-colistin (mCPC) agar. In a total of 446 alkaline peptone water preenrichments amended with polymyxin B,
V. vulnificus
was isolated from 154 preenrichments (35%) with mCPC agar and from 179 preenrichments (40%) with CC agar. CC agar gave a higher plating efficiency of
V. vulnificus
cells than did cellobiose-polymyxin B-colistin (CPC) agar, mCPC agar, or thiosulfate-citrate-bile salts-sucrose (TCBS) agar; the only significant difference was observed with TCBS agar, which gave much lower plating efficiencies than the other selective media. Determination of MICs demonstrated that the concentrations of colistin and polymyxin B in CPC agar inhibit growth of a proportion of
V. vulnificus
strains.
American Society for Microbiology
Title: Improved Isolation of
Vibrio vulnificus
from Seawater and Sediment with Cellobiose-Colistin Agar
Description:
ABSTRACT
An improved selective medium, cellobiose-colistin (CC) agar, gave a significantly higher (
P
< 0.
05) isolation rate of
Vibrio vulnificus
from water and sediment samples than did modified cellobiose-polymyxin B-colistin (mCPC) agar.
In a total of 446 alkaline peptone water preenrichments amended with polymyxin B,
V.
vulnificus
was isolated from 154 preenrichments (35%) with mCPC agar and from 179 preenrichments (40%) with CC agar.
CC agar gave a higher plating efficiency of
V.
vulnificus
cells than did cellobiose-polymyxin B-colistin (CPC) agar, mCPC agar, or thiosulfate-citrate-bile salts-sucrose (TCBS) agar; the only significant difference was observed with TCBS agar, which gave much lower plating efficiencies than the other selective media.
Determination of MICs demonstrated that the concentrations of colistin and polymyxin B in CPC agar inhibit growth of a proportion of
V.
vulnificus
strains.
Related Results
Occurrence of
Vibrio vulnificus
Biotypes in Danish Marine Environments
Occurrence of
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Biotypes in Danish Marine Environments
ABSTRACT
During the unusually warm summer in Denmark in 1994, 11 clinical cases of
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infection were reported. These r...
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Abstract
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