Volume 16, Number 6—June 2010
Dispatch
Pulsed-field Gel Electrophoresis for Salmonella Infection Surveillance, Texas, USA, 2007
Table 2
Ten Salmonella pulsed-field gel electrophoresis clusters among residents of Houston, Texas, USA, and 2 Houston singlet cases linked by PFGE to national outbreaks, detected May 1, 2007–December 31, 2007*
Serotype | PFGE pattern, Xbal† | No. cases in Houston | No. other cases in DSHS database | Associated national outbreak | Common exposure or other link |
---|---|---|---|---|---|
Braenderup | JBPX01.0516 | 2 | 4 | PulseNet outbreak 0708HUJBP-1c | Traveled or resided in southern Texas |
Corvallis | SCVX01.0014 | 2 | 0 | – | Unknown |
Enteritidis | JEGX01.0004 | 13 | Numerous | PulseNet outbreak 0801PAJEG-1 | Egg consumption |
Enteritidis | JEGX01.0005 | 6 | 25 | – | Unknown |
Infantis | JFXX01.0022 | 3 | 5 | – | Unknown |
Infantis | JFXX01.0041 | 5 | 1 | – | Unknown |
Paratyphi b var. java | JKXX01.0014 | 4 | 2 | PulseNet outbreak 0710NCJKX-1c (7) | Contact with miniature turtles |
Typhimurium | JPXX01.0276 | 2 | 0 | – | Unknown |
Typhimurium | JPXX01.0621 | 3 | 3 | PulseNet outbreak 0801ORJPX-1c | Unknown |
Typhimurium | JPXX01.0006 | 2 | 3 | Possible bovine outbreak (multistate) 0708MLJPX-1c | Unknown |
Typhimurium | JPXX01.1037 | 1 | 0 | PulseNet outbreak 0704WIWWS-1c | Packaged vegetable product‡ |
Typhimurium | JPXX01.1354 | 1 | 1 | PulseNet outbreak 0703MLJPX-2c | Contact with hamsters‡ |
*PFGE, pulsed-field gel electrophoresis; DSHS, Texas Department of State Health Services.
†PulseNet nomenclature.
‡The case was linked by PFGE to a PulseNet cluster, but the patient denied having been exposed to the hypothesized epidemiologic link.
References
- Bender JB, Hedberg CW, Boxrud DJ, Besser JM, Wicklund JH, Smith KE, Use of molecular subtyping in surveillance for Salmonella enterica subtype Typhimurium. N Engl J Med. 2001;344:189–95. DOIPubMedGoogle Scholar
- Tauxe RV. Molecular subtyping and the transformation of public health. Foodborne Pathog Dis. 2006;3:4–8. DOIPubMedGoogle Scholar
- Barrett TJ, Gerner-Smidt P, Swaminathan B. Interpretation of pulsed-field gel electrophoresis patterns in foodborne disease investigation and surveillance. Foodborne Pathog Dis. 2006;3:20–31. DOIPubMedGoogle Scholar
- Swaminathan B, Barrett TJ, Hunter SB, Tauxe RV. CDC PulseNet Task Force. PulseNet: The molecular subtyping network for foodborne bacterial disease surveillance, United States. Emerg Infect Dis. 2001;7:382–9.PubMedGoogle Scholar
- Gerner-Smidt P, Hise K, Kincaid J, Hunter S, Rolando S, Hyytiä-Trees E, PulseNet USA: a five-year update. Foodborne Pathog Dis. 2006;3:9–19. DOIPubMedGoogle Scholar
- Hedberg CW, Besser JM. Commentary: cluster evaluation, PulseNet, and public health practice. Foodborne Pathog Dis. 2006;3:32–5. DOIPubMedGoogle Scholar
- Centers for Disease Control and Prevention. Multistate outbreak of human Salmonella infections associated with exposure to turtles—United States, 2007–2008. MMWR Morb Mortal Wkly Rep. 2008;57:69–72.PubMedGoogle Scholar