Background: Salmonella enterica subsp. enterica serovar Mikawasima (antigenic formula 6,7,14:y:e,n,z15) is a serovar of the O:7 (C1) serogroup. While this serovar is very rare and hardly reported among human cases, it has caused two outbreaks (one in Norway and one in the UK). In the US there are no reports of S. Mikawasima in humans and animals in the last 10 years. In Malaysia, S. Mikawasima was reported from fish and from aquaculture systems; the reported strains showed resistant to up to four antibiotics (chloramphenicol, clindamycin, rifampicin, and tetracycline).
Animal reservoir: Reptiles and fish have been reported as a reservoir.
Geographical distribution: S. Mikawasima appears to be only present in some countries in Europe and Asia.
Outbreaks: S. Mikawasima was associated with two outbreaks, one in Norway and one current outbreak (December, 2013) in the UK.
Year | Location | Associated source | Number of cases |
| 2018 | Germany, Sweden, Denmark,Czech Republic, Austria | unknown | 50 |
2013 | UK | unknown | 75 |
2012 | Norway | unknown | 13 |
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