Table 5 Outbreaks identified in Sweden from 2018 to 2022
Month/Year | Nr. of susp. cases | Nr. of typed cases | Comment | Species | Subtype |
|---|---|---|---|---|---|
May 2019 | 12 | 4 | Private event with 30 guests. Suspected contaminated salad | C. parvum | IIdA22G1 |
June 2019 | 10 | 4 | Private midsummer event. Suspected contaminated salad | C. parvum | IIaA16G1R1b |
October-December 2019 | Unknown | 122 | National outbreak with unpasteurised juice as the source of contamination | C. parvum1 | IIdA22G1c |
October-December 2019 | Unknown | 65 | National outbreak with unknown source of contamination | C. parvum1 | IIdA24G1 |
October 2019 | Unknown | 3 | Pre-school | C. mortiferum2 | XIVaA20G2T1 |
December 2019 | Unknown | 2 | Christmas buffet with contaminated kale as the suspected source | C. parvum | IIdA21G1 |
December 2019 | Unknown | 2 | Christmas buffet with contaminated kale as the suspected source | C. parvum | IIdA21G1 |
December 2019 | Unknown | 2 | Christmas buffet with contaminated winter salad mix as the suspected source | C. parvum | IIdA20G1e |
August 2020 | 7 | 7 | Restaurant, suspected contaminated arugula | C. parvum | IIaA17G1R1c |
December 2020 | 20 | 4 | Elementary school, suspected contaminated kale | C. parvum | IIdA21G1_ OL598545 |
January 2021 | 23 | 18 | Elderly home and two schools, contaminated kale | C. parvum | IIdA23G1 (n = 12), IIaA18G1R1b_variant (n = 3), IIaA16G1R1b (n = 1) and IIdA21G1 (n = 1) |
February 2022 | Unknown | 4 | Agricultural school | C. parvum | IIaA14R1 |
May 2022 | 3 | 2 | Assisted living that also has various kinds of animals such as lambs | C. parvum | IIaA14G1R1r1 |
June 2022 | 4 | 2 | School visit to farm with calves | C. parvum | IIaA15G2R1 |
September-October 2022 | Unknown | 107 | National outbreak affecting 15 counties. Contaminated frisée salad as the suspected source | C. parvum | IIaA15G2R1 |
October-November 2022 | 4 | 1 | Agricultural school | C. parvum | IIdA19G1 |
November 2022 | 75 | 2 | Upper secondary school Contaminated salad buffet as the suspected source | C. parvum | IIdA22G1c |