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Volume 9, Number 9—September 2003

Research

Skunk and Raccoon Rabies in the Eastern United States: Temporal and Spatial Analysis

Marta A. Guerra*Comments to Author , Aaron T. Curns*, Charles E. Rupprecht*, Cathleen A. Hanlon*, John W. Krebs*, and James E. Childs*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA

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Table 3

Summary of Poisson regression analysis of number of rabid raccoons and skunks in 11 mid-Atlantic states

Parameter Estimate Standard error pvalue
Intercept 0.2835 0.1433 0.0479
Raccoona 0.0262 0.0087 0.0025
Timeb -0.0021 0.0023 0.3748
Raccoon time 0.002 0.0004 <0.0001
County c - -
Month d - -

aRaccoon = no. of rabid raccoons lagged 1 month
bTime = time in months (starting at 1 with appearance of first rabid raccoon or skunk in each county to a maximum value of 140).
cParameter estimates for each county (Worcester, MA, referent group): –0.6529, Berkshire, MA; 0.3297, Bristol, MA; –1.0655, Burlington, NJ; –0.9563, Caroline, MD; –1.1583, Columbia, NY; –1.1351, Dorchester, MD; –0.6038, Dutchess, NY; 0.4234, Essex, MA; –0.2474, Fairfield, CT; –1.0079, Gloucester, NJ; –0.2611, Hartford, CT; –0.3519, Kent, DE; –0.5922, Litchfield, CT; 0.2036, Middlesex, MA; –0.8831, Middlesex, NJ; –1.2675, Monmouth, NJ; –0.5668, Monroe, PA; 0.0172, New Haven, CT; 0.3402, Newport, RI; 0.3887, Norfolk, MA; –0.4269, Orange, NY; –0.0079, Plymouth, MA; 0.3419, Providence, RI; –1.1506, Putnam, RI; –1.0282, Somerset, NJ; –0.3285, Sussex, NJ; –0.3688, Ulster, NY; –1.2583, Union, NJ; –0.3556, Washington, RI; 0.0306, Westchester, NY; –0.6928, Wicomico, MD.
dParameter estimates for each month (December referent group): –0.4074, January; –0.7792, February; –0.6313, March; –0.4830, April; –0.6289, May; –0.8763, June; –0.6548, July; –0.0262, August; 0.2592, September; 0.2851, October; 0.2555, November.

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