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Background: Salmonella enterica subsp. enterica serovar Montevideo (antigenic formula 6,7,14:g,m,[p],s:[1,2,7]) is a serovar of the O:7 (C1) serogroup. S. Montevideo is the sixth most common serovar isolated from humans and animals in the U.S. Outbreaks caused by S. Montevideo have been associated with imported spices and live poultry. Whole genome sequencing of a number of S. Montevideo strains have been conducted, including an study that identified one strain with two large plasmids that encoded antimicrobial and heavy metal resistance genes.  

Animal reservoir: Cattle and chickens are common reservoirs of S. Montevideo.

Geographical distribution: S. Montevideo is globally distributed. It has been reported, among the most common serovars, in the U.S., Europe, Latin America, Asia, and Oceania

Outbreaks: Numerous outbreaks in different countries have been linked to serovar Montevideo, imported spices have been associated with several of these outbreaks.

Year

Location

Associated source

Number of cases

2018US-multistateSprouts10
2017US-multistateTahini 8
2016US-multistate, Mexico, Canada, Perupistachios9

2013

US-multistate

Tahini

16

2012

US-multistate

Live poultry

93

2010

US-multistate

Red and Black Pepper/Italian-Style Meats

272

2010

Germany

Dietary food supplement

15

2002-03

Australia &New Zealand

Tahini

68

2002

Japan

Lunch prepared by caterer

23

1996

England

Cooked chicken

10

Recalls: Food recalls have been associated with S. Montevideo.

YearLocationRecalled foodType
2016US-multistate, Mexico, Canada, PeruWonderful Pistachiosnuts


Relevant links and references:

  1. http://www.cdc.gov/salmonella/montevideo-tahini-05-13/
  2. http://www.cdc.gov/salmonella/montevideo-06-12/index.html
  3. http://www.cdc.gov/salmonella/montevideo/index.html
  4. http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=20040
  5. http://www.cdc.gov/salmonella/montevideo-03-16/index.html
  6. http://www.foodsafetynews.com/2013/05/salmonella-linked-to-tahini-sickens-8-across-country/#.WVvXMPnyuUl
  7. https://www.cdc.gov/salmonella/montevideo-01-18/index.html
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