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Volume 15, Number 1—January 2009
Dispatch

Variation in Antimicrobial Resistance in Sporadic and Outbreak-related Salmonella enterica Serovar Typhimurium

Eva Møller NielsenComments to Author , Mia Torpdahl, Steen Ethelberg, and Anette M. Hammerum
Author affiliations: Statens Serum Institut, Copenhagen, Denmark

Main Article

Table 2

Characterization of Salmonella genomic island 1 in isolates with atypical antimicrobial-drug phenotype and isolates likely to be related (possible clusters or outbreaks)*

Outbreak (no. isolates) MLVA profile PFGE pattern Phenotype SGI1 variant Left/right junction intI1 L1-R1 1.0/1.2 kb pse-1 florR aadA2 qac/ sul1 tet(G)
Carpaccio outbreak 1 (33) 253 205 ACSSuT SGI1 +/+ +/+ + + + + +
Carpaccio outbreak 2 (3) 253 205 ASu SGI1-B +/+ −/+ + +
Pork outbreak 2003–2004 (18) 133 14 ASu SGI1-B +/+ −/+ + +
Jun 2003 “cluster” (2) 437 14 ASu SGI1-B +/+ −/+ + +
Jun 2003 (1) 437 14 ACSSuT SGI1 +/+ +/+ + + + + +
Oct 2005–Jan 2006 (8) 443 14 SSu SGI1-C +/+ +/− + +
Jan 2006 (1) 443 14 ASSuTTm† SGI1-C +/+ +/− + +
Dec 2003 (1) 309 14 ASSu‡ SGI1-B +/+ −/+ + +
Sep 2006 (1) 270 nd ACST (SGI1) +/+ +/+ + + + + +
Aug 2003 (3) 681 14 SSuT§
2003–2006 (8) Various Various Sensitive

*MLVA, multilocus variable number of tandem repeats analysis; PFGE, pulsed-field gel electrophoresis.
†Other genes detected by PCR: bla, strAB, and tet(B).
‡Other genes detected by PCR: strAB and sul2.
§Other genes detected by PCR: strAB sul2, and tet(A).

Main Article

Page created: December 06, 2010
Page updated: December 06, 2010
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