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Volume 31, Number 2—February 2025
Research

Cyclospora Genotypic Variations and Associated Epidemiologic Characteristics, United States, 2018–2021

John Shen, Vitaliano A. Cama1, David Jacobson, Joel Barratt, and Anne Straily1Comments to Author 
Author affiliation: Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee, USA (J. Shen); Centers for Disease Control and Prevention, Atlanta, Georgia, USA. (J. Shen, V.A. Cama, D. Jacobson, J. Barratt, A. Straily)

Main Article

Table 1

Classification of CCGs by Cyclospora species and distribution by year in study of Cyclospora genotypic variations and associated epidemiologic characteristics, United States, 2018–2021*

Species CCG ID 2018 2019 2020 2021
C. cayetanensis S001 2.3 17.3† 3.1 10.4
S002 1.6 2.7 0.3 2.6
S003 2.0 2.7 0.6 3.4
S005 1.8 3.5 0.5 2.4
S006 1.6 0.4 16.9† 4.4
S007 14.2 7.1 8.3 9.0
S008 1.3 1.5 0.0 11.4
S009 2.5 1.8 0.5 1.1
S012 1.4 3.1 23.0† 19.7
S013 0.4 0.9 0.3 1.3
S014 0.4 1.5 0.0 0.8
S015 0.7 1.1 1.0 0.7
S018 1.1 1.3 0.1 1.3
S021 0.7 3.9 0.6 1.5
S022 20.2† 0.5 0.5 0.8
S025 0.5 1.2 1.3 1.0
S027 0.4 1.1 1.0 1.5
S028 1.1 1.7 0.5 1.5
S029 27.6† 1.3 0.4 0.0
S033
 0.0
 0.2
 4.0
 0.3
C. ashfordi S004 7.2 17.5† 21.4† 9.6
S010 1.8 0.7 0.1 0.7
S011 2.2 1.5 2.6 0.5
S016 0.5 5.9 0.0 0.2
S017 0.5 1.6 0.5 0.8
S019 0.5 3.5 6.8 0.5
S020 3.2 2.1 2.1 7.7
S023 0.5 8.3 0.5 0.7
S024 0.4 1.6 0.4 2.1
S026 0.4 0.4 0.0 0.7
S030 0.4 0.7 0.6 0.5
S031 0.2 0.6 1.4 0.5
S032 0.4 0.9 0.4 0.5

*Values are percentages. Species assignments apply to the consensus genotype for the whole cluster. CCG. cluster-consensus genotype. †CCGs with distribution >15%.

Main Article

1These senior authors were co–principal investigators.

Page created: December 30, 2024
Page updated: January 31, 2025
Page reviewed: January 31, 2025
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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