Norovirus caused the most outbreaks and illnesses in 2022, according to the Swedish Food Agency (Livsmedelsverket).
Overall, there were 337 reports of suspected or confirmed foodborne illnesses to the agency with 2,261 cases of illness. In 303 events, two or more people were infected from the same source. This is up from 251 outbreaks with 1,467 patients in 2021.
In 2022, the number of food poisonings returned to the level seen before the COVID-19 pandemic. The increase in outbreaks and illnesses began in late 2021, when several restrictions imposed during the pandemic were lifted.
The number of incidents peaked during the last six months of 2022. This was because of four large outbreaks with more than 100 patients during September and December.
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