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Volume 29, Number 3—March 2023
Research

Associations of Anaplasma phagocytophilum Bacteria Variants in Ixodes scapularis Ticks and Humans, New York, USA

Melissa Prusinski1, Collin O’Connor1Comments to Author , Alexis Russell, Jamie Sommer, Jennifer White, Lauren Rose, Richard Falco, John Kokas2, Vanessa Vinci, Wayne Gall3, Keith Tober2, Jamie Haight, JoAnne Oliver, Lisa Meehan, Lee Ann Sporn, Dustin Brisson, and P. Bryon Backenson
Author affiliations: New York State Department of Health, Albany, New York, USA (M. Prusinski, A. Russell, J. Sommer, J. White, L. Rose, L. Meehan, P.B. Backenson); University at Buffalo Department of Geography, Buffalo, New York, USA (C. O’Connor); New York State Department of Health, Buffalo (C. O’Connor, W. Gall, K. Tober); New York State Department of Health, Armonk, New York, USA (R. Falco, J. Kokas, V. Vinci); New York State Department of Health, Falconer, New York, USA (J. Haight); New York State Department of Health, Syracuse, New York, USA (J. Oliver); Paul Smith's College, Paul Smiths, New York, USA (L.A. Sporn); University of Pennsylvania, Philadelphia, Pennsylvania, USA (D. Brisson)

Main Article

Table 2

Distance and relative risks of space-time Bernoulli clusters of pathogenic and nonpathogenic variants of A. phagocytophilum bacteria in adult and nymphal Ixodes scapularis ticks, New York, USA, 2008–2020*

Cluster no.
 Cluster type
 Years
 Radius, km
 RR
Adults
1 Ap-V1 2008–2018 192.47 4.74†
2 Ap-V1 2008–2015 139.14 4.23†
3 Ap-ha 2011–2016 25.62 1.29
4 Ap-ha 2012–2020 20.64 1.22
5 Ap-ha 2014–2020 31.76 1.26
6 Ap-ha 2014–2017 58.66 1.24
7 Ap-ha 2015–2016 42.41 1.30
8 Ap-ha 2016–2020 36.91 1.28
9 Ap-ha 2016–2020 24.01 1.24

*Ap-ha, human pathogenic variant of A. phagocytophilum bacteria; Ap-V1, nonpathogenic variant of A. phagocytophilum bacteria; RR, relative risk. †Case and control groups were reversed to indicate an increased risk of one variant to another.

Main Article

1These authors contributed equally to this article.

2Retired.

3Current affiliation: US Department of Agriculture, Animal and Plant Health Inspection Service, Buffalo, NY 14213, USA.

Page created: January 12, 2023
Page updated: February 21, 2023
Page reviewed: February 21, 2023
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