Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to page options Skip directly to site content


Description:Under the low-power magnification of 20X of a digital Keyence scope , this photograph depicts the colonial growth displayed by Gram-negative Yersinia pseudotuberculosis bacteria, which were cultured on a MacConkey agar (MAC) medium, for a 24 hour time period, at a temperature of 37°C.
“Illness caused by Yersinia pseudotuberculosis is mainly characterized by fever and acute abdominal pain due to mesenteric lymphadenitis that mimics appendicitis. Secondary manifestations include erythema nodosum and reactive arthritis (1). Outbreaks have been reported in the Northern Hemisphere, including Canada (2,3), Japan (4), and Russia (5). Several community outbreaks have also been reported in Finland since 1982 (1,6–9). Only in a few of the outbreaks has the vector or source of the infection been identified. Recently, fresh produce, such as iceberg lettuce (7) and carrots (9), has been implicated by epidemiologic investigations as a source of infection, but mechanisms of contamination of fresh produce have remained unknown." See the link below for the article from which this quote was extracted, and additional information regarding Y. pseudotuberculosis.
High Resolution: Click here for hi-resolution image (5.79 MB)
Content Providers(s):CDC/ Todd Parker, Ph.D., Assoc Director for Laboratory Science, Div of Preparedness and Emerging Infections at CDC
Creation Date:2014
Photo Credit:Todd Parker, Ph.D., Assoc Director for Laboratory Science, Div of Preparedness and Emerging Infections at CDC
Links:CDC - Kangas S, Takkinen J, Hakkinen M, Nakari U-M, Johansson T, Henttonen H, et al. Yersinia pseudotuberculosis O:1 traced to raw carrots, Finland [letter]. Emerg Infect Dis [serial on the Internet]. 2008 Dec
CDC Organization
Skip Navigation Links.

Skip Navigation Links.
Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.