Outbreak of tularaemia in central Norway, January to March 2011

K W Larssen; J E Afset; B T Heier; T Krogh; K Handeland; T Vikøren; K Bergh

doi:10.2807/ese.16.13.19828-en

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Outbreak of tularaemia in central Norway, January to March 2011
K W Larssen¹ , J E Afset^1,2 , B T Heier³ , T Krogh⁴ , K Handeland⁵ , T Vikøren⁵ , K Bergh^1,2
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Affiliations: ¹ Department of Microbiology, St Olavs Hospital, Trondheim University Hospital,Trondheim, Norway ² Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway ³ Division of Infectious Disease Control, Norwegian Institute of Public Health, Oslo, Norway ⁴ Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo, Norway ⁵ Norwegian Veterinary Institute, Oslo, Norway

Correspondence:
J Afset
jan.afset ntnu.no
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Citation style for this article: Larssen K W, Afset J E, Heier B T, Krogh T, Handeland K, Vikøren T, Bergh K. Outbreak of tularaemia in central Norway, January to March 2011. Euro Surveill. 2011;16(13):pii=19828. https://doi.org/10.2807/ese.16.13.19828-en Received: 17 Mar 2011

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Abstract

From January to March 2011, 39 cases of tularaemia were diagnosed in three counties in central Norway: 21 cases of oropharyngeal type, 10 cases of glandular/ulceroglandular type, two of respiratory and two of typhoid type. Three cases were asymptomatic and clinical information was unavailable for one case. The mean age was 40.3 years (range 2-89 years). Thirty-four reported use of drinking water from private wells. An increased rodent (lemming) population and snow melting may have led to contamination of the wells with infected rodents or rodent excreta.