Observations on production of hemolysin, heat-labile ...
|Title||Observations on production of hemolysin, heat-labile enterotoxin and antimicrobial drug resistance among enterotoxigenic Escherichia coli from pigs|
|Author(s)||H. Hariharan, S. Heaney, J. Bryenton, J. Daley|
|Journal||Comparative Immunology, Microbiology and Infectious Diseases|
|Abstract||A total of 52 isolates of Escherichia coli belonging to enterotoxigenic serotypes from piglets with diarrhea were examined for hemolysis, production of cholera-like enterotoxin (LT) and susceptibility to 10 antimicrobial drugs. A strong association between production of LT and hemolysis was seen. Ninety percent of 29 hemolylic isolates were LT+ whereas 100% of 23 nonhemolytic isolates were LT- in a commercial latex agglutination assay. Antimicrobial susceptibility tests employing disc diffusion showed that resistance to trimethoprim-sulfamethoxazole (TMS), neomycin and tetracycline was significantly less among LT+ isolates compared to LT- ones. Enrofloxacin was the only antimicrobial drug to which all the 52 isolates were susceptible.|
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