TABLE 4

Frequency distribution of ospC major groups of B. burgdorferi

Major groups of ospCb
SampleNaABCDEFGHIJKMNTUMc
Long Island
SI-9424108993323323032.4
SI-9632381246692614912093.1
MP14213531222101.6
LI-nym25362422537101.4
WW-96216463527331352.7
East Coast
MA1157031420652003.2
RI310001020220002.7
NY12588416665421356303.1
NY2401001000232002.3
CT14302162534202.0
NJ421012010221003.0
MD11346526330972013.7
MD2951000241522012.6
NC13010000200000001.0
SC100001000000001.0
Total20340513434384039147644401916
Average multiplicity
Adult ticks: 2.8 (clone/infected tick)
Nymph: 1.4 (clone/infected tick)
Adult ticks in NC1 and SC: 1.0 (clone/infected tick)
Frequency differentiationd
Among 1997 samples (MA, NY1, MD1, and MD2): P = 0.570 (NS)
Among 1996 samples (SI, WW, and CT): P = 0.001**
Between SI-94 and SI-96: P = 0.00183**
  • ** P < 0.01.

  • a Number of Borrelia-infected ticks.

  • b Underlined entries are the four major groups (A, B, I, and K) that cause disseminated Lyme disease (Seinost et al. 1999). Dashes indicate data not available, due to either probes not included or probes not hybridizing to controls.

  • c Multiplicity. It is obtained by dividing the total number of signals by the total number of infected ticks.

  • d P values by Raymond and Rousset's (1995) exact test of population differentiation (NS, nonsignificant).