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- W55121990 abstract "Objectives: To characterize S. aureus (SAU) strains producingexfoliative toxins A (ETA) and/or B (ETB) from 5 outbreaks ofpemphigus neonatorum. Methods: As many as 366 SAU strains werereferred to the National Reference Laboratory forStaphylococci, NIPH, Prague, from pemphigus neonatorumoutbreaks in 4 Czech (A, B, C, and D) and 1 Slovak (E)hospitals in 2006 - 2008. The strains were tested by phenotypic(RPLA, phage-typing) and genotypic methods (PFGE; prophagecarriage by multiplex PCR targeting prophages significant inlysogenic conversion of ETA production). Results: As many as118 of the 366 isolates under study were found to produce one,or two of exfoliative toxins. Hospital A. Sixty-nine SAUstrains originating from an outbreak persisting for more than 6months included 12 producers of both ETA and ETB classifiedinto phage type (PT) 3A/3C/55 from newborns and mothers and 8isolates from health care professionals. Hospital B. Of 35 SAUisolates, 13 were ETA producers (PT 47/75) from newborns and 3originated from nurses. Hospital C. Altogether 146 SAU strainsoriginated from an extended outbreak (November 2006 throughAugust 2007). Of 36 toxigenic strains, 11 produced ETA and 25ETA+ETB. The exfoliatin producers showed an identical PFGEpattern. Twenty-nine ETA and/or ETB producers were fromnewborns (blister fluid, navel swabs, impetigo, paronychia),two originated from mothers (impetigo and nasal swab), and onefrom a nasal swab from a nurse. The detection of 4 ETA+ETBproducers from the hospital environment was of high relevance.The ETA+ETB-positive strains isolated in Hospital C showedidentical PFGE patterns as did one strain, ETA+ETB producer,from the Hospital D. Hospital D. Fifty-seven SAU strains fromone outbreak of pemphigus neonatorum in 2008. Nineteen strainswith hyperproduction of exfoliatin B originated from childrenand mothers (nasal swabs and impetigo), and one such strain wasisolated from children's balm. Slovak Hospital E. Along-standing outbreak has been observed since 2003. SinceNovember 2006, 44 SAU strains were referred to NRL. Fifteenstrains were identical ETA producers (PT 47/75) from newborns'blisters and 1 such strain was a nasal isolate from a nurse.Genotyping revealed that the strains isolated in Slovakhospital E in 2003 and 2006 are of the same PFGE type. A highlysimilar PFGE profile was identified in the causative SAUstrains in hospital B. Interestingly, all studied ET-positivestrains were harboring the same types of prophages (group B andFb-like). Conclusions: Genotyping was helpful in identifyingthe source of infection and controlling nosocomial outbreaks ofpemhigus neonatorum in newborns." @default.
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- W55121990 date "2008-01-01" @default.
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- W55121990 title "Characteristics of Staphylococcus aureus strains from 5outbreaks of pemphigus neonatorum in the Czech Republic andSlovakia" @default.
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