Genotyping Cyclospora cayetanensis from multiple outbreak clusters with an emphasis on a cluster linked to bagged salad mix - United States, 2020

Author:

Barratt Joel1,Ahart Lauren1,Rice Marion1,Houghton Katelyn1,Richins Travis1,Cama Vitaliano1,Arrowood Michael2,Qvarnstrom Yvonne1,Straily Anne1

Affiliation:

1. Parasitic Diseases Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, USA

2. Waterborne Disease Prevention Branch, Division of Foodborne, Waterborne, and Environmental Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Abstract

Abstract Cyclosporiasis is a diarrheal illness caused by the food-borne parasite Cyclospora cayetanensis. Annually reported cases have been increasing in the United States prompting development of genotyping tools to aid cluster detection. A recently developed Cyclospora genotyping system based on eight genetic markers was applied to clinical samples collected during the cyclosporiasis peak-period of 2020, facilitating assessment of its epidemiologic utility. While the system performed well and helped inform epidemiological investigations, inclusion of additional markers to improve cluster detection was supported. Consequently, investigations have commenced to identify additional markers to enhance performance.

Publisher

Oxford University Press (OUP)

Subject

Infectious Diseases,Immunology and Allergy

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