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1345114 
Journal Article 
RESISTOGRAM TYPING AS AN EPIDEMIOLOGIC TOOL FOR ESCHERICHIA-COLI ISOLATES OF POULTRY ORIGIN 
David, BP; Purushothaman, V; Venkatesan, RA 
1992 
1 
Letters in Applied Microbiology
ISSN: 0266-8254
EISSN: 1472-765X 
15 
3 
96-99 
WOS:A1992JL90800005 
Twenty isolates of Escherichia coli from cases of
colibacillosis-affected birds in different farms in and around Madras city of Tamil Nadu State
(India) were collected and subjected to resistogram typing. The resistogram types obtained from
seven dyes and toxic chemicals were useful in differentiating the isolates. In all 14 different
types were obtained with 100% showing resistance to phenyl mercuric nitrate and only 10% to 4-
chloresorcinol. The resistance patterns towards other dyes and chemicals were, in descending
order, copper sulphate, 95%, sodium arsenate, 80%, acriflavine, 70%, boric acid, 65%, and
malachite green, 60%. The usefulness of this test as an epidemiological tool is discussed.