Characterization and Antimicrobial Susceptibility Patterns of Listeria monocytogenes from Raw Cow Milk in the Southern Part of Ethiopia

Table 4

Seasonal variations in the prevalence of Listeria species isolates, Southern Ethiopia.

Season	N	PS1		χ^2	value	PS2		χ^2	value
		NI	%			NI	%
Dry	122	26	21.3	6.70	0.01	6	4.92	1.77	0.18
Wet	118	43	36.4			11	9.32
Total	240	69	28.75			17	7.08

N = number of samples examined; NI = number of positive isolates;  = positive isolates of Listeria species including L. monocytogenes;  = positive isolates of L. monocytogenes.