Outbreak of Shigella sonnei infection in Norway linked to consumption of fresh basil, October 2011

B Guzman-Herrador; L Vold; H Comelli; E MacDonald; B T Heier; A L Wester; T L Stavnes; L Jensvoll; A Lindegård Aanstad; G Severinsen; J Aasgaard Grini; Ø Werner Johansen; K Cudjoe; K Nygård

doi:10.2807/ese.16.44.20007-en

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Outbreak of Shigella sonnei infection in Norway linked to consumption of fresh basil, October 2011

B Guzman-Herrador^1,2, L Vold¹, H Comelli¹, E MacDonald¹, B T Heier¹, A L Wester¹, T L Stavnes¹, L Jensvoll³, A Lindegård Aanstad⁴, G Severinsen⁵, J Aasgaard Grini⁶, Ø Werner Johansen⁷, K Cudjoe⁸, K Nygård¹
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Affiliations: ¹ Norwegian Institute of Public Health, Oslo, Norway ² European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden ³ Norwegian Food Safety Authority, Head Office, Oslo, Norway ⁴ Norwegian Food Safety Authority, District Office. Tromsø, Norway ⁵ Municipality of Tromsø, Norway ⁶ Norwegian Food Safety Authority, District Office, Østfold, Norway ⁷ Municipality of Sarpsborg, Østfold, Norway ⁸ Norwegian Veterinary Institute, Oslo ,Norway

Correspondence:
B Guzman-Herrador
BernardoRafael.Guzman.Herrador fhi.no
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Citation style for this article: Guzman-Herrador B, Vold L, Comelli H, MacDonald E, Heier B T, Wester A L, Stavnes T L, Jensvoll L, Lindegård Aanstad A, Severinsen G, Aasgaard Grini J, Werner Johansen Ø, Cudjoe K, Nygård K. Outbreak of Shigella sonnei infection in Norway linked to consumption of fresh basil, October 2011. Euro Surveill. 2011;16(44):pii=20007. https://doi.org/10.2807/ese.16.44.20007-en Received: 02 Nov 2011

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Abstract

We report a Shigella sonnei outbreak of 46 cases that occurred in Norway during October 2011. Two municipalities were involved. A large cluster (42 cases) was concentrated in north Norway, while a small cluster (4 cases) occurred in the south-east region. Epidemiological evidence and traceback investigations have linked the outbreak to the consumption of imported fresh basil. The product has been withdrawn from the market. No further cases have been reported since 25 October.