Management of a Clostridium difficile Epidemic in Captive South American Sea Lions (Otaria flavescens)
IAAAM 2018
Natalie E. Noll1*; Erica J. Palmer1; Robert L. Kellar1
1Coral World Ocean Park, St. Thomas, USVI, USA

Abstract

The incidence and severity of Clostridium difficile infection (CDI) has increased dramatically over the past decade in humans.1,2 Its treatment, however, has largely remained the same with the exception of oral vancomycin use as a first-line agent in severe disease.1,2,4 For the past 10 years, human CDI deaths have been almost 7 times the rate of all other intestinal infections combined. Worldwide, several major CDI outbreaks have occurred and this epidemic has contributed to the rising incidence and mortality of CDI.5 The purpose of this presentation is to review diagnostic testing, management, treatment, infection control, and prevention strategies that were utilized to combat CDI morbidity in a population of South American Sea Lions at Coral World Ocean Park.2,3,4 Four South American sea lions and two additional sea lions added to the population were infected with Clostridium difficile. Clinical signs included watery diarrhea, anorexia, nausea, and abdominal pain. Some sea lions were more severely affected than others. Clinical signs correlated with positive CDI infection and colonization results of diagnostics which included ELISA toxin, cytotoxicity assays, cytology, fecal cultures and PCR. Multiple environmental and sanitary protocols and practices, changes in substrate, addition of probiotics, decreasing use of antibiotics and diet changes all contributed to the decrease of outbreaks with CDI.

Acknowledgements

The authors wish to thank Nicole Stacy, DVM, Dipl. ACVP with the Aquatic Animal Health Program at the University of Florida’s College of Veterinary Medicine and the diligent training staff at Coral World Ocean Park.

* Presenting author

Literature Cited

1.  Lall S, Nataraj G, Mehta P. 2017. Use of culture- and ELISA-based toxin assay for detecting Clostridium difficile, a neglected pathogen: a single-center study from a tertiary care setting. J Lab Physicians. 9(4):254–259.

2.  Szabo L. 2015.Dangerous infections now spreading outside hospitals. USA Today.

3.  NOAA. 2014. FAQs on the 2013 California Sea Lion UME Investigation.

4.  Martinez FJ, Leffler DA, Kelly CP. 2012. Clostridium difficile outbreaks: prevention and treatment strategies. Risk Manag Healthc Policy. 5:55–64.

5.  DePestel DD, Aronoff DM. 2013. Epidemiology of Clostridium difficile infection. J Pharm Pract. 26(5)464–475.

 

Speaker Information
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Natalie E. Noll
Coral World Ocean Park
St. Thomas, USVI, USA


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