Table 1.

Number of individuals (percentage of total samples) with specific serum titers for immunoglobulin G to Phase I and Phase II Coxiella burnetii antigens, among 32 small ruminant veterinarians and veterinary students as determined by the immunofluorescence assay (Focus Diagnostics) (February 24, 2012, Ontario, Canada)

With the exception of non-reactive titers, titers above the dashed line are suggestive of a chronic infection and those below, suggestive of an acute infection.

NR — Not reactive.

40.6% (13/32) Unexposed (phase I and phase II IgG not reactive).

9.4% (3/32) Titers suggestive of recent exposure (phase II titer > phase I titer).

50.0% (16/32) Titers suggestive of past exposure (phase I titer ≥ phase II titer).