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Volume 18, Number 12—December 2012

Research

Reservoir Competence of Wildlife Host Species for Babesia microti

Michelle H. HershComments to Author , Michael Tibbetts, Mia Strauss, Richard S. Ostfeld, and Felicia Keesing
Author affiliations: Bard College, Annandale-on-Hudson, New York, USA (M.H. Hersh, M. Tibbetts, M. Strauss, F. Keesing); and Cary Institute of Ecosystem Studies, Millbrook, New York, USA (M.H. Hersh, R.S. Ostfeld)

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Table 4

Host species infected with Babesia microti, southeastern New York, USA, 2008–2010*

Host species No. (%) infected hosts No. (%) infected ticks Mean % infected ticks/infected host (range)
Mammals

Blarina brevicauda

15 (53.6) 103 (19.3) 38.2 (5.6–100.0)

Didelphis virginiana

7 (29.2) 10 (2.2) 7.2 (4.3–10.5)

Glaucomys volans†

2 (40.0) 2 (2.4) 10.3 (4.0–16.7)

Mephitis mephitis†

1 (50.0) 6 (19.4) 28.6

Peromyscus leucopus

12 (70.6) 90 (29.2) 41.8 (4.0–90.9)

Procyon lotor

18 (85.7) 93 (23.5) 25.6 (4.3–52.6)

Sciurus carolinensis

5 (27.8) 9 (2.7) 8.5 (4.2–16.0)

Sorex cinereus†

2 (33.3) 12 (29.3) 70.0 (50.0–90.0)

Tamias striatus

7 (46.7) 42 (17.1) 37.8 (4.3–90.9)

Tamiasciurus hudsonicus

5 (33.3) 9 (3.1) 8.3 (4.0–10.5)
Birds

Catharus fuscescens

6 (40.0) 12 (3.9) 9.3 (4.0–18.8)

Dumetella carolinensis

3 (23.1) 3 (1.3) 4.5 (4.2–4.8)

Hylocichla mustelina

7 (38.9) 18 (5.7) 14.4 (4.0–50.0)

Turdus migratorius

2 (11.8) 2 (0.68) 6.8 (5.3–8.3)

*Infected hosts are those that transmitted B. microti to >1 Ixodes scapularis tick larvae. For sample sizes, see Table 1.
†Host species with <10 individual hosts sampled.

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