Increased Borrelia burgdorferi Seroprevalence in Nova Scotia-Prevalence and Distribution 10 Years Later.

Lyme disease (LD), a tick-borne infection, is endemic in Nova Scotia. One decade ago, the seropositivity rate to Borrelia burgdorferi was 2/1855 (0.14%). In the current study, using residual sera representing ages 10-64 years, we demonstrate an increase in seroprevalence, to 25/1872 (1.60%), with the highest seroprevalence in the western area of the province.