Volume 12, Number 4—April 2006
Research
Epidemic Spread of Lyme Borreliosis, Northeastern United States
Table 4
Transmissibility of Borrelia burgdorferi genotypes from infectious hosts to ticks*
| Host species | No. infected/ tested ticks (%) |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| GT1 | GT2 | GT3 | GT4 | GT5 | GT6 | GT7 | GT8 | Pearson χ2 (df) | p value | |
| White-footed mouse | 11/21 (52) | 31/56 (55) | 26/65 (40) | 4/14 (29) | 10/42 (24) | 2/7 (3) | 1/7 (14) | 4/21 (19) | 18.33 (7) | <0.01 |
| Pine vole | 13/25 (52) | 7/52 (14) | NC | NC | 1/7 (14) | 1/7 (14) | 14.56 (3) | <0.01 | ||
| Eastern chipmunk | 1/14 (7) | 4/14 (29) | 12/59 (20) | 2.12 (2) | >0.05 | |||||
| Gray squirrel | 16/26 (62) | 7/32 (22) | 9.43 (1) | <0.01 | ||||||
| Raccoon | 5/50 (10) | 5/99 (5) | 15/49 (31) | 8 /51 (16) | 19.36 (3) | <0.001 | ||||
| Virginia opossum | 1/50 (2) | 13/126 (10) | 3/27 (11) | 1/50 (2) | 6.51 (3) | >0.05 | ||||
| Pearson χ2 (df) | 45.17 | 46.94 | 22.97 | 15.20 | 15.16 | NC | 0.02 | 0.07 | ||
| p value | <0.001 | <0.001 | <0.001 | 0.001 | <0.01 | NC | >0.05 | >0.05 | 6.51 (3) | >0.05 |
*GT, genotype; df, degrees of freedom;NC, not calculated.
1Current affiliation, New York Medical College, Valhalla, New York, USA
2Current affiliation, University of Bath, Bath, United Kingdom
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