Francisella tularensis Exposure Among National Park Service Employees During an Epizootic: Devils Tower National Monument, Wyoming, 2015

Details

• Alternative Title:
  Vector Borne Zoonotic Dis
• Personal Author:
  Harrist, Alexia ; Cherry, Cara ; Kwit, Natalie ; Bryan, Katie ; Pappert, Ryan ; Petersen, Jeannine ; Buttke, Danielle ; Wong, David ; Nelson, Christina
• Description:
  Introduction:
  
  Tularemia is a zoonotic infection caused by the highly infectious bacterium Francisella tularensis. Persons having outdoor professions are more likely than others to be exposed to F. tularensis through increased contact with arthropods, infected animals, and contaminated aerosols.
  
  Materials and Methods:
  
  After a tularemia epizootic during July and August 2015 at Devils Tower National Monument and an associated tularemia infection in a park employee, we assessed seroprevalence of F. tularensis antibodies, risk factors for F. tularensis seropositivity, and use of protective measures among park employees.
  
  Results:
  
  Seroprevalence among participating employees was 13% (3/23). Seropositive employees reported multiple risk factors for F. tularensis exposure through both job-related and recreational activities. Activities reported by more seropositive than seronegative employees included using a power blower (67% vs. 5%, p = 0.03), collecting animal carcasses (100% vs. 30%, p = 0.047), and hunting prairie dogs recreationally (67% vs. 5%, p = 0.03). Seropositive employees reported exposure to more ticks (median 30, range 25–35) than seronegative employees (median 6, range 0–25, p = 0.001). Most employees used protective measures (e.g., insect repellent) inconsistently but increased use after receiving educational materials.
  
  Conclusions:
  
  Educating and enabling at-risk employees to use protective measures consistently, both at work and during recreational activities, can reduce exposure during epizootics.
  
  
• Subjects:
  Adult Antibodies, Bacterial Case-Control Studies Female Francisella Tularensis Government Employees Humans Male Middle Aged Parks, Recreational Seroepidemiologic Studies Tularemia Wyoming Young Adult

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• Keywords:
  National Parks Occupational Exposure Tularemia Zoonotic Infections
• Source:
  Vector Borne Zoonotic Dis. 19(5):316-322
• Pubmed ID:
  30508402
• Pubmed Central ID:
  PMC7065464
• Document Type:
  Journal Article
• Funding:
  CC999999/ImCDC/Intramural CDC HHSUnited States/
• Volume:
  19
• Issue:
  5
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:23a08d1173fe821deb3a4c0abf1c52fdee7f7c0f470585f56f8bf1340ded84f8
• Download URL:
  https://stacks.cdc.gov/view/cdc/85854/cdc_85854_DS1.pdf
• File Type:
  [PDF - 93.82 KB ]