An outbreak of food poisoning due to Escherichia coli serotype O7:H4 carrying astA for enteroaggregative E. coli heat-stable enterotoxin1 (EAST1).
Epidemiol Infect
; 149: e244, 2021 11 02.
Article
em En
| MEDLINE
| ID: mdl-34726137
ABSTRACT
In June 2020, a large-scale food poisoning outbreak involving about 3000 elementary and junior high school students occurred in Yashio, Saitama, Japan. A school lunch was the only food stuff ingested by all of the patients. Escherichia coli serotype O7H4 carrying the astA gene for enteroaggregative E. coli (EAggEC) heat-stable enterotoxin 1 (EAST1) was detected in faecal specimens from the patients, and sample inspection revealed its presence in a seaweed salad and red seaweed (Gigartina tenella) as one of the raw materials. Analysis of the antibiotic sensitivity of the isolates revealed resistance to ampicillin and cefotaxime. All isolates were confirmed to be of the same origin by pulsed-field gel electrophoresis after digestion with the restriction enzyme XbaI, and single nucleotide polymorphism analysis using whole genome sequencing. To our knowledge, this is the first report of a large-scale food poisoning caused by E. coli O7H4, which lacks well-characterized virulence genes other than astA.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
3_ND
Base de dados:
MEDLINE
Assunto principal:
Surtos de Doenças
/
Escherichia coli
/
Doenças Transmitidas por Alimentos
Tipo de estudo:
Etiology_studies
Limite:
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
Epidemiol Infect
Ano de publicação:
2021
Tipo de documento:
Article