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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 4

Final zero-inflated negative binomial regression model for Ap-ha in adult I. scapularis in New York, USA, 2010–2018

Category Negative binomial model
  
 		 Zero-inflated model
β 95% CI SE p value β 95% CI SE p value
Intercept
 –3.19
 –3.69 to –2.69
 0.25
 <0.0001
–3.67
 –6.14 to –1.20
 1.26
 0.0036
Year categories
2008–2011 Referent Referent
2012–2014 –0.09 –0.65 to 0.46 0.29 0.7431 –0.18 –1.83 to 1.47 0.84 0.8282
2015–2017 0.33 –0.18 to 0.83 0.26 0.2023 –0.23 –1.80 to 1.35 0.80 0.7783
2018–2020
 –0.40
 –0.90 to 0.10
 0.26
 0.1149
–1.68
 –3.31 to –0.06
 0.83
 0.0421
Latitude categories
South of 42°N Referent Referent
42°N–43°N –0.50 –1.31 to 0.32 0.42 0.2304 2.15 0.31–3.99 0.94 0.0223
North of 43°N
 –2.91
 –4.93 to –0.89
 1.03
 0.0048
3.82
 1.92–5.72
 0.97
 <0.0001
Longitude categories
East of 74°W Referent
74°W–76°W –0.63 –1.39 to 0.14 0.39 0.1071 1.30 0.53–2.08 0.40 0.0001
West of 76°W
 –1.67
 –4.44 to 1.09
 1.41
 0.2351
3.95
 2.96–4.94
 0.50
 <0.0001
Interaction categories
2012–2014: 42°N–43°N 0.27 –0.60 to 1.14 0.44 0.5456
2015–2017: 42°N–43°N 0.50 –0.34 to 1.33 0.43 0.2435
2018–2020: 42°N–43°N 1.39 0.56–2.21 0.42 0.0010
2008–2011: North of 43°N) Referent
2012–2014: North of 43°N 2.36 0.32–4.40 1.04 0.0237
2015–2017: North of 43°N 2.76 0.76–4.47 1.02 0.0069
2018–2020: North of 43°N 3.79 1.77–5.80 1.03 0.0002
2012–2014: 74°W–76°W 0.45 –0.38 to 1.27 0.42 0.2915
2015–2017: 74°W–76°W 0.33 –0.43 to 1.09 0.39 0.3948
2018–2020: 74°W–76°W 0.78 0.02–1.53 0.38 0.0437
2012–2014: West of 76°W –16.73 –6,096.37 to 6,062.91 3,101.91 0.9957
2015–2017: West of 76°W 0.77 –2.06 to 3.60 1.44 0.5917
2018–2020: West of 76°W 1.25 –1.54 to 4.04 1.42 0.3799

*Bold indicates statistical significance. Ap-ha, human pathogenic variant of A. phagocytophilum bacteria; ERI, entomological risk index.

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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