Volume 16, Number 6—June 2010
Research
Evolution of Northeastern and Midwestern Borrelia burgdorferi, United States
Table 1
Genetic markers and population diversity of Borrelia burgdorferi, midwestern and northeastern United States, 1999–2001*
Marker | No. samples | π | dN/dS | Maximum χ2, p value | Sawyer test, significant fragments |
---|---|---|---|---|---|
IGS | 39 | 0.014 | NA | 107, p<0.01 | 0 |
ospA | 31 | 0.0033 | 0.334 | 0 | 0 |
ospB | 44 | 0.0042 | 0.303 | 739, p<0.05 | 0 |
ospC | 44 | 0.207 | 0.591 | 74, 83, 90, 137, 338; p<0.001 | 4 |
*dN/dS, directional selection; IGS, intergenic spacer; NA, not applicable; osp, outer surface protein.