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Background: Salmonella enterica subsp. enterica serovar Blockley (antigenic formula 6,8:k:1,5 [z58]) is a serovar of the O:8 (C2-C3) serogroup. Serovar Blockley was first isolated from the stool from a 60-year-old patient in the United States in 1955

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

Animal reservoir: Chickens are the main reservoir for serovar Blockley. This serovar was also found in turkey, cattle, and pigs

Geographical distribution: Serovar Blockley has been reported worldwide periodically. 

Human outbreaks: 

Year

Location

Associated source

Number of cases

2019US: NYChicken10
1998GermanySmoked eel13
1966US: MAFrozen unpasteurized egg yolks167

Border rejections: There have been no recent border rejections linked to this serovar. 

Recalls: There have been no recent recalls linked to this serovar.

Relevant links:

  1. https://www.cdc.gov/mmwr/volumes/69/wr/mm6926a2.htm
  2. https://academic.oup.com/femspd/article/46/1/3/598130
  3. https://journals.asm.org/doi/pdf/10.1128/jb.70.3.354-355.1955
  4. https://pmc.ncbi.nlm.nih.gov/articles/PMC2869563/
  5. https://jamanetwork.com/journals/jama/article-abstract/336687
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