Salad behind Swedish Salmonella outbreak

A Salmonella outbreak in Sweden has ended after affecting greater than 100 individuals.

In whole, 102 individuals fell sick within the nationwide Salmonella Typhimurium outbreak from Sept. 17 to Oct. 19.

Arugula, also referred to as rocket or rucola, and bagged salad mixes that included arugula have been the probably supply of an infection, in keeping with the Public Well being Company of Sweden (Folkhälsomyndigheten), however no particular model or firm was named.

Twenty of 21 Swedish areas have been affected. Most instances have been reported in Västra Götaland, Skåne, Värmland, Jönköping, and Halland.

Sufferers have been aged 4 to 87 with a mean of 48 years previous and 64 have been girls. Most individuals fell sick within the second half of September.

Tracing the supply
Regional an infection management models and the Swedish Meals Company (Livsmedelsverket) helped Folkhälsomyndigheten try to discover the supply of an infection.

This concerned accumulating data from confirmed outbreak sufferers about what they ate earlier than falling sick utilizing interviews, surveys and buy receipts.

A case-control research was additionally carried out primarily based on questions on suspect meals to search out out to what extent the outbreak instances ate these within the week earlier than they turned sick in comparison with wholesome management topics.

Outcomes confirmed that those that turned sick within the outbreak had eaten arugula or a blended salad that presumably included arugula greater than the management group. These merchandise have additionally been discovered on a lot of buy receipts held by sufferers from round mid-September.

Nevertheless, the supply has not been capable of be confirmed by way of microbiological evaluation of merchandise.

Such merchandise have a restricted shelf life and the variety of new reported diseases has decreased for the reason that begin of October, so officers consider contaminated salad is now not in the marketplace.

The incident doesn’t seem like linked to a latest Salmonella Typhimurium outbreak in Denmark. Officers consider the outbreak in Sweden was brought on by a unique supply as a result of the strains don’t cluster.

In Denmark, 15 instances have been recorded between Aug. 15 and Sept 27. Sufferers have been eight males and 7 girls aged between 4 and 84 years previous, with a median age of 61. The supply was not recognized.

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