ENTEROAGGREGATIVE ESCHERICHIA COLI O104 FROM THAI AND IMPORTED MALAYSIAN RAW BEEF.
Nureesan WameadesaAphisara Sae-limFadeeya HayeebilanPattamarat RattanachuayPharanai SukhumungoonPublished in: The Southeast Asian journal of tropical medicine and public health (2018)
Local Thai and imported Malaysian beef in southern Thailand area carry
several Shiga toxin-producing Escherichia coli (STEC) serotypes. STEC O104 is an
important pathogen capable of causing outbreaks with considerable morbidity
and mortality. This study investigated the presence of E. coli O104 from local Thai
and imported Malaysian beef obtained from markets in Hat Yai City, Songkhla
Province during August 2015 - February 2016. Thirty-one E. coli O104 strains
were isolated from 12 beef samples (16% and 23% Thai and imported Malaysian,
respectively). Thirty strains possessed aggA (coding for a major component of
AAF/I fimbriae), a gene associated with enteroaggregative E. coli (EAEC) pathotype,
and all strains carried fimH (encoding Type 1 fimbriae). Thirty strains
belonged to phylogenetic group B1 and one strain (from Malaysian beef) to group
A. Agglutination of yeast cells was observed among 29 E. coli O104 strains. Investigation
of stx2 phage occupancy loci demonstrated that sbcB was occupied in 12
strains. Antimicrobial susceptibility assay revealed that 7 strains were resistant
to at least one antimicrobial agent and two were multi-drug resistant. One strain
carried extended spectrum β-lactamase gene blaCTX-M and three carried blaTEM. PFGE-generated DNA profiling showed identical DNA pattern between that of
one EAEC O104 strain from Thai beef and another from Malaysian beef, indicating
that these two strains originated from the same clone. This is the first report
in Thailand describing the presence of EAEC O104 from both Thai and imported
Malaysian beef and their transfer between both countries. Thorough surveillance
of this pathogen in fresh meats and vegetables should help to prevent any possible
outbreak of E. coli O104.
Keyphrases
- escherichia coli
- drug resistant
- klebsiella pneumoniae
- biofilm formation
- genome wide
- public health
- pseudomonas aeruginosa
- gene expression
- staphylococcus aureus
- single cell
- oxidative stress
- high throughput
- induced apoptosis
- cell free
- cystic fibrosis
- south africa
- cell proliferation
- health risk assessment
- nucleic acid
- health risk