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

Persons using assistive technology might not be able to fully access information in this file. For assistance, please send e-mail to: Type 508 Accommodation and the title of the report in the subject line of e-mail.

Notes from the Field: Salmonella Newport Infections Associated with Consumption of Unpasteurized Milk --- Utah, April--June 2010

On April 29, 2010, the Utah Department of Health (UDOH) was notified of three cases of Salmonella enterica serotype Newport infection. The three patients recently had consumed unpasteurized milk purchased from a store in northern Utah (store A). In Utah, unpasteurized milk can be sold legally at licensed dairies or by licensed dairies at dairy-owned retail stores meeting specific requirements (1). A central Utah dairy licensed to sell unpasteurized milk (dairy A) owns and sells unpasteurized milk at store A and a second northern Utah store (store B). By May 3, 2010, three additional patients with S. Newport infections had been reported; all recently had consumed unpasteurized milk purchased from store A. UDOH notified the Utah Department of Agriculture and Food (UDAF) of the suspected association between illness and unpasteurized milk consumption, and UDAF suspended sales of unpasteurized milk at the two stores on May 3, 2010.

During April 29--June 3, 2010, a total of 10 S. Newport cases were reported to UDOH; all 10 patients had consumed unpasteurized milk from store A (seven patients) or store B (three patients). The patients ranged in age from 2 to 56 years (median: 21 years); six were female. One patient was hospitalized. Isolates from all 10 patients were identified as indistinguishable by two-enzyme pulsed-field gel electrophoresis (PFGE), with pattern combination UTJJPX01.098/UTJJPA26.009, and were sensitive to routinely used antibiotics. Cultures of frozen, unpasteurized milk samples stored at dairy A from batches of milk sold during the outbreak period yielded S. Newport isolates indistinguishable by PFGE from the outbreak strain. An inspection of dairy A on May 7, 2010, did not reveal any obvious sources of contamination.

On May 12, 2010, on the basis of coliform test results within legal limits, the dairy was permitted to resume sales of unpasteurized milk. Ongoing testing includes monthly screening for Salmonella spp. in retail samples of unpasteurized milk. As of June 21, 2010, no additional cases had been reported to UDOH. Consumption of unpasteurized dairy products poses a risk for foodborne illness (2), and consumers of unpasteurized milk should be aware of this risk.

Reported by

JM Hall, MPH, RT Rolfs, MD, RK Herlihy, MD, MPS Dimond, MPH, Bur of Epidemiology, Utah Dept of Health; J Holbrook, MPH, Utah County Health Dept; LH Smith, JM Wagner, Unified State Laboratories: Public Health, Utah Dept of Health; RW Clark, MPH, Utah Dept of Agriculture and Food. WA Lanier, DVM, EIS Officer, CDC.


  1. Utah Dairy Act. Utah Code sec 4-3-14. Available at Accessed July 1, 2010.
  2. Oliver SP, Boor KJ, Murphy SC, Murinda SE. Food safety hazards associated with consumption of raw milk. Foodborne Path Dis 2009;6:793--806.

Use of trade names and commercial sources is for identification only and does not imply endorsement by the U.S. Department of Health and Human Services.

References to non-CDC sites on the Internet are provided as a service to MMWR readers and do not constitute or imply endorsement of these organizations or their programs by CDC or the U.S. Department of Health and Human Services. CDC is not responsible for the content of pages found at these sites. URL addresses listed in MMWR were current as of the date of publication.

All MMWR HTML versions of articles are electronic conversions from typeset documents. This conversion might result in character translation or format errors in the HTML version. Users are referred to the electronic PDF version ( and/or the original MMWR paper copy for printable versions of official text, figures, and tables. An original paper copy of this issue can be obtained from the Superintendent of Documents, U.S. Government Printing Office (GPO), Washington, DC 20402-9371; telephone: (202) 512-1800. Contact GPO for current prices.

**Questions or messages regarding errors in formatting should be addressed to The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #