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Foodborne outbreak of hepatitis A, November 2007–January 2008, Austria

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Abstract

An outbreak of hepatitis A affecting 21 residents of an Austrian city occurred from the end of November 2007 until mid-January 2008. A case series investigation suggested the consumption of food purchased from supermarket X as the common link. A food handler employed in the delicatessen department of that supermarket had been serologically diagnosed with hepatitis A on 28th November 2007. During the infectious period of approximately 3 weeks, he worked on 11 days. Interviews with the other cluster cases revealed that the hepatitis A virus (HAV)-infected food handler did not practice appropriate hand hygiene. The investigation revealed no other possible source of infection. We hypothesize that the food of the delicatessen department contaminated by the HAV-infected food handler during his infectious period was the source of the outbreak. The district public health authority recommended the reinforcement of hygiene precautions, i.e., access to viricidal hand disinfectant and the use of disposable gloves and single-use paper towels, in the involved supermarket. The federal ministry of health recommended HAV vaccination for all food handlers in food production and gastronomy companies; this recommendation was included in the Austrian national vaccination plan 2008, even though the vaccination of food handlers is costly and its cost-effectiveness is not proven. Appropriate and regular hand hygiene, particularly after toilet visits, is the most effective measure for preventing HAV transmission.

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Authors and Affiliations

  1. Austrian Agency for Health and Food Safety (AGES), Vienna, Austria

    D. Schmid, R. Fretz & F. Allerberger

  2. European Programme for Intervention Epidemiology Training (EPIET), Stockholm, Sweden

    R. Fretz

  3. Public Health Authorities, Salzburg, Austria

    G. Buchner, C. König, H. Perner, R. Sollak & A. Tratter

  4. Paracelsus Medical University, Salzburg, Austria

    M. Hell, M. Maass & M. Strasser

  5. Österreichische Agentur für Gesundheit und Ernährungssicherheit (AGES), Spargelfeldstraße 191, 1220, Wien, Austria

    F. Allerberger

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  1. D. Schmid
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  2. R. Fretz
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  3. G. Buchner
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  4. C. König
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  5. H. Perner
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  6. R. Sollak
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  7. A. Tratter
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  8. M. Hell
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  9. M. Maass
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  10. M. Strasser
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  11. F. Allerberger
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Correspondence to F. Allerberger.

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Schmid, D., Fretz, R., Buchner, G. et al. Foodborne outbreak of hepatitis A, November 2007–January 2008, Austria. Eur J Clin Microbiol Infect Dis 28, 385–391 (2009). https://doi.org/10.1007/s10096-008-0633-0

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  • DOI: https://doi.org/10.1007/s10096-008-0633-0

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