Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

Volume 13, Number 12—December 2007


Escherichia coli O157:H7 in Feral Swine near Spinach Fields and Cattle, Central California Coast1

Michele T. Jay*Comments to Author , Michael Cooley‡, Diana Carychao‡, Gerald W. Wiscomb§, Richard A. Sweitzer¶, Leta Crawford-Miksza*, Jeff A. Farrar#, David K. Lau**, Janice O’Connell*, Anne Millington#, Roderick V. Asmundson**, Edward R. Atwill, and Robert E. Mandrell‡
Author affiliations: *California Department of Public Health, Richmond, California, USA; †University of California, Davis, California, USA; ‡US Department of Agriculture, Albany, California, USA; §US Department of Agriculture, Sacramento, California, USA; ¶University of North Dakota, Grand Forks, North Dakota, USA; #California Department of Public Health, Sacramento, California, USA; **US Food and Drug Administration, Alameda, California, USA;

Main Article

Table 2

Unique alphanumeric MLVA types of Escherichia coli O157:H7 isolated from environmental samples collected at ranch A and an upstream watershed, California, September–November 2006*

Sample type No. samples No. isolates MLVA type
Reference (human stool, bagged spinach) NA NA E
Cattle feces 26 34 A, C, E, F, I, J, L, M, P, Q, R, S, T, W, X, Z
Feral swine feces 11 14 A, B, C, E, L, O, P, X, 5, 6
Feral swine colonic feces (necropsy) 2 10 A, C, D, G, H, K, L, U, V, Y
Sediment (river) 2 8 A, C, L, M, N, W, 3
Soil (cattle pasture) 1 1 A
Surface water 3 6 A, C, L, P, 4
Surface water Moore swab† 2 3 1, 2

*MLVA, multilocus variable number tandem repeat analysis; NA, not applicable. Samples indistinguishable from the major spinach-related outbreak strain by pulsed-field gel electrophoresis (XbaI-BlnI PulseNet profile EXHX01.0124-EXHA26.0015) are shown in boldface.
†Isolates collected from surface water (river) ≈32 km upstream of ranch A.

Main Article

1This work was presented in part as a poster at the 107th General Meeting of the American Society for Microbiology, Toronto, Ontario, Canada, May 24, 2007.

Top of Page The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO