TABLE 6.

Virulence parameters for L. monocytogenes inlA subgroups using the exponential modeling approach^a

Molecular subgroup	No growth considered between retail and consumption		Growth considered between retail and consumption
	r value (log)	Confidence interval (95%)	r value (log)	Confidence interval (95%)
inlA without PMSCs	−8.12	−8.15-−8.06	−10.44	−10.53-−10.38
inlA with PMSCs	−10.67	−10.75-−10.61	−13.76	−13.84-−13.69
Combined modelb	−9.44	−9.52-−9.37	−12.76	−12.85-−12.69

^aValues were obtained based on human illness and clinical isolate data from the MD and CA FoodNet sites.

^bValues for L. monocytogenes regardless of subtypes for comparison.