Background:  Salmonella enterica subsp. enterica serovar Johannesburg (antigenic formula: 1,40:b:e,n,x) is a serovar of the O:40 (R) serogroup.

NCBI PD link for serovar Johannesburg: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Johannesburg%22)

Genetic characteristics:

Animal reservoir:

Geographical distribution:

Human outbreaks:

Year

Location

Associated source

Number of cases

2024US: multistateBackyard poultry1470
2011US: multistateChicks and ducklings28
1974China: Hong KongHospital-associated2 46

1 Salmonella Altona, Cerro, Enteritidis, Indiana, Infantis, Johannesburg, Mbandaka, and Typhimurium were involved. 

2 Suspected. No common vehicle could be identified as the source of infection.

Border rejections:

Year

Exporting country

Importing country

Associated source

Product category

2020PolandSlovakiaMinced meat preparationMeat and meat products (other than poultry)

Recalls:

YearLocationRecalled foodType
2021GermanyTiger nut flourOther food product / mixed

Relevant links:

  1. https://www.cdc.gov/salmonella/outbreaks/backyardpoultry-05-24/investigation.html
  2. https://archive.cdc.gov/www_cdc_gov/salmonella/2011/chicks-ducklings-10-6-2011.html#:~:text=Outbreak%20Summary&text=The%20first%20was%20an%20outbreak,had%20a%20similar%20geographic%20distribution.
  3. https://pmc.ncbi.nlm.nih.gov/articles/PMC2129741/
  4. https://webgate.ec.europa.eu/rasff-window/screen/notification/444589
  5. https://webgate.ec.europa.eu/rasff-window/screen/notification/512070