Luft et al saying that the virulent human attacking OspC gene, version A, most probably entered America from a European source less than 200 years ago.
"We found evidence of genetic endemism, recent migration events, and recombinant genomic types. In fact, the highly pathogenic ospC - clone A seems to have spread rapidly in recent years to infect a broad range of host species in 2 continents."
........................
"Poisson zero-term probabilities that no fixed difference has
occurred within 11,167 bases in the past 50, 100, and 200
years are 0.33, 0.10, and 0.011, respectively. Therefore, the
trans-oceanic migration of clone A likely occurred more
recently than 200 years ago"
years are 0.33, 0.10, and 0.011, respectively. Therefore, the
trans-oceanic migration of clone A likely occurred more
recently than 200 years ago"
