Serotypes, pathogenic potential and antimicrobial resistance of Escherichia coli isolated from subclinical bovine mastitis milk samples in Egypt.

In this study, E. coli were isolated from fourteen (9.3%) SCM milk samples. The isolated E. coli (n=14) were serotyped, their potential pathogenicity and antimicrobial resistances (AMRs) were investigated. Serotyping results showed that the E. coli isolates belonged to the O55:H7 (n=2), O111:H4 (n=2), O127:H6 (n=2), O128:HUN (n=2), O26:HUN (n=1), O44:H18 (n=1), O114:H21 (n=1), O86:HUN (n=1), O124:HUN (n=1) and O127:H7 (n=1) serogroups. Potential pathogenicity was detected in 93% (13/14) of the isolates. In particular, thirteen isolates possessed at least one of the examined virulence genes. Ten isolates (71%) exhibited AMR to at least one of the tested antimicrobials, 4 (40%) of them were- multidrug-resistant and one isolates showed ESBL production. The obtained results indicate that SCM acts as a source for the spread of potentially pathogenic E. coli strains that are resistant to many groups of antibiotics which may constitute a hazard for both public and animal health. PMID: 31061360 [PubMed - as supplied by publisher]
Source: Japanese Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: Jpn J Infect Dis Source Type: research