Salmonella Braenderup | The International Outbreak Museum

Outbreak: Milk Crates, Cartons, & Jugs
Product: Milk Crates, Cartons, & Jugs	Investigation Start Date: 01/27/2010
Location: Roseburg, Oregon	Etiology: Salmonella Braenderup
Earliest known case onset date: 10/21/2009	Latest case onset date: 10/01/2010
Confirmed / Presumptive Case Counts: 25 / 0	Positive Samples (Food / Environmental): 15 / 500
Hospitalizations: 0	Deaths: 0

Epi curve and map of Salmonella Braenderup outbreak cases associated with milk cartons.
A variety of milk containers were produced by Umpqua; all of these were part of the Salmonella outbreak.
A huge volume of milk was produced and the facility kept impeccable records.
Epidemiologists swab floor drains in the milk processing facility.
Outdoor milk crate storage.
Epidemiologists swab ceiling vents as they search for clues about whether Salmonella is contaminating this milk product.
Umpqua milk in an Umpqua milk crate.
Crate washer machine located on the roof of the plant.
Epidemiologists track specimens in a log as they are collected.
Standing water on the roof is swabbed.
Epidemiologists swabbed in between crate crevices to get a good sample.
Milk crates had to slide through here during the dysfunctional decontamination process.
Dr. Keene takes a shot of an Umpqua Dairy truck as the investigation comes to a close.

OUTBREAK SUMMARY:

This outbreak illustrates the value of descriptive epidemiology and the virtue of epidemiologist persistence! Over a 12-month period during 2009–2010, a total of 25 infections by Salmonella Braenderup with matching PFGE patterns were reported—no more than 4 in any given month. After 3 scattered cases over 3 months, the … Continue Reading ››