Changing Pattern of Human Listeriosis, England and Wales, 2001–2004

Microbiologic and epidemiologic data on 1,933 cases of human listeriosis reported in England and Wales from 1990 to 2004 were reviewed. A substantial increase in incidence occurred from 2001 to 2004. Ten clusters (60 cases), likely to represent common-source outbreaks, were detected. However, these...

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Bibliographic Details
Main Authors: Iain Gillespie, Jim McLauchlin, Kathie Grant, Christine Little, Vina Mithani, Celia Penman, Christopher Lane, Martyn Regan
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2006-09-01
Series:Emerging Infectious Diseases
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Online Access:https://wwwnc.cdc.gov/eid/article/12/9/05-1657_article
Description
Summary:Microbiologic and epidemiologic data on 1,933 cases of human listeriosis reported in England and Wales from 1990 to 2004 were reviewed. A substantial increase in incidence occurred from 2001 to 2004. Ten clusters (60 cases), likely to represent common-source outbreaks, were detected. However, these clusters did not account for the upsurge in incidence, which occurred sporadically, predominantly in patients >60 years of age with bacteremia and which was independent of sex; regional, seasonal, ethnic, or socioeconomic differences; underlying conditions; or Listeria monocytogenes subtype. The reasons for the increase are not known, but since multiple L. monocytogenes strains were responsible, this upsurge is unlikely to be due to a common-source outbreak. In the absence of risk factors for listeriosis in this emerging at-risk sector of the population, dietary advice on avoiding high-risk foods should be provided routinely to the elderly and immunocompromised, not just to pregnant women.
ISSN:1080-6040
1080-6059