The horizontal line represents the median, + is the mean Given the ubiquitous presence of L. monocytogenes in the environment, discrimination of neurovirulent subtypes would be highly desirable for surveillance purposes and effective disease control, especially with regard to the high mortality rate [ 35, 45 ] and the high frequency of persistent neurologic deficits associated with neurolisteriosis [ 10, 41 ].
Source: wiktionary