Table 4.

Contingency table for major ospC groups retrieved from lesions and ticks collected from eastern Long Island

Isolate source (n)No. of observations in isolates of major ospC groupa:
Erythema migrans lesions (46)136200104164
Ixodes scapularis ticks (74)1212119657156
  • a The numbers of observations for lesions and for ticks were significantly different (χ2 = 36.3 with 9 degrees of freedom; P < 0.001).

  • b Combined major groups (Comb) are defined by individual frequencies of 0.025 or less and include groups E, J, N, and O.