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Geographical distribution and space-time clustering of human illnesses with major Salmonella serotypes in Florida, USA, 2017-2018.
Li, Xiaolong; Singh, Nitya; Havelaar, Arie H; Blackburn, Jason K.
Affiliation
  • Li X; Department of Environmental and Global Health, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA.
  • Singh N; Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA.
  • Havelaar AH; Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA.
  • Blackburn JK; Animal Sciences Department and Food Systems Institute, University of Florida, Gainesville, FL, USA.
Epidemiol Infect ; 150: e175, 2022 10 31.
Article in En | MEDLINE | ID: mdl-36315003
ABSTRACT
Nontyphoidal salmonellosis is the leading reported foodborne illness in Florida. Although the diversity of Salmonella serotypes circulating in Florida has been identified, the geographical characteristics of the major serotypes are poorly described. Here we examined the geospatial patterns of 803 whole-genome sequenced Salmonella isolates within seven major serotypes (Enteritidis, Newport, Javiana, Sandiego, Braenderup, Typhimurium and I 4,[5],12i-) with the metadata obtained from Florida Department of Health during 2017-2018. Geographically, the distribution of incidence rates varied distinctively between serotypes. Illnesses with Enteritidis and Newport serotypes were widespread in Florida. The incidence rate for Javiana was relatively higher in the north compared to the south. Typhimurium was concentrated in the northwest, while I 4,[5],12i-, the monophasic variant of Typhimurium was limited to the south. We also evaluated space-time clustering of isolates at the zip code level using scan statistic models. Space-time clusters were detected for each major serotype during 2017-2018. The multinomial scan statistic found the risk of illness with Javiana was higher in the north and southwest in the fall of 2017 compared to other major serotypes. This serotype-specific clustering analysis will assist in further unpacking the associations between distinct reservoirs and illnesses with major serotypes in Florida.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Salmonella / Salmonella Food Poisoning Type of study: Prognostic_studies Limits: Humans Country/Region as subject: America do norte Language: En Journal: Epidemiol Infect Journal subject: DOENCAS TRANSMISSIVEIS / EPIDEMIOLOGIA Year: 2022 Document type: Article Affiliation country: Estados Unidos

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Salmonella / Salmonella Food Poisoning Type of study: Prognostic_studies Limits: Humans Country/Region as subject: America do norte Language: En Journal: Epidemiol Infect Journal subject: DOENCAS TRANSMISSIVEIS / EPIDEMIOLOGIA Year: 2022 Document type: Article Affiliation country: Estados Unidos