@article{mbs:/content/journal/jmm/10.1099/jmm.0.039289-0, author = "Januszkiewicz, Aleksandra and Szych, Jolanta and Rastawicki, Waldemar and Wołkowicz, Tomasz and Chróst, Anna and Leszczyńska, Beata and Kuźma, Elżbieta and Roszkowska-Blaim, Maria and Gierczyński, Rafał", title = "Molecular epidemiology of a household outbreak of Shiga-toxin-producing Escherichia coli in Poland due to secondary transmission of STEC O104 : H4 from Germany", journal= "Journal of Medical Microbiology", year = "2012", volume = "61", number = "4", pages = "552-558", doi = "https://doi.org/10.1099/jmm.0.039289-0", url = "https://www.microbiologyresearch.org/content/journal/jmm/10.1099/jmm.0.039289-0", publisher = "Microbiology Society", issn = "1473-5644", type = "Journal Article", abstract = "We characterized two STEC O104 : H4 clinical isolates collected in Poland from a 7-year-old boy with haemolytic uraemic syndrome (HUS) and his nanny. This household outbreak began on 29 May 2011. Because of its time-frame, the outbreak was assumed to be part of the international STEC O104 : H4 outbreak that arose in Germany in May 2011. The two Polish isolates were Shiga-toxin-producing Escherichia coli (stx2 lpf) with enteroaggregative E. coli pathotype (aggR aap aggA), thereby sharing the unique virulence properties of the epidemic STEC O104 : H4 strain from the international outbreak. The Polish isolates were multi-drug resistant and carried bla TEM, strA, strB, tetA, sul1 and sul2 markers together with the bla CTX-M-15 gene for CTX-M-15 extended-spectrum β-lactamase. PFGE patterns and plasmid profiles of the Polish isolates and the epidemic STEC O104 : H4 strain corresponded closely. This finding suggested an epidemiological link between the Polish STEC O104 : H4 isolates and the international outbreak. Retrospective serological investigations proved person-to-person transmission of the epidemic STEC O104 : H4 strain from a father who had visited Dortmund, Germany, to his 7-year-old son in Giżycko, Poland. To the best of our knowledge, this is the first report of household transmission of Shiga-toxin-producing E. coli in Poland.", }