Table 3.

Species and serovar frequency of Listeria spp. isolates from food, in Brazil. Period 1990–2012.

Food type	L. innocua			L. monocytogenes												L. welshimeri	L. seeligeri	L. grayi	Total
	6a	6b	NT∗	1/2a	1/2b	1/2c	3a	3b	3c	4b	4c	4e	7	NT∗	R∗∗				N	%
Meat:
Nonprocessed	1939	90	233	244	250	140	6	20	2	275		28	1	2	4	51	25		3310	57.37
Processed	615	53	27	239	113	144	5	8		163	2	4		18		8	5		1404	24.33
Ready-to-eat	387	38	45	139	90	80		1		195		13	1	4			2	2	997	17.28
Unknown	2			11	13	14				19									59	1.02
Total
N	2943	181	305	633	466	378	11	29	2	652	2	45	2	24	4	59	32	2	5770	100
%	51.0	3.14	5.29	10.97	8.08	6.55	0.19	0.51	0.04	11.29	0.04	0.78	0.04	0.41	0.06	1.02	0.55	0.04

^∗NT = nontypable (smooth form).

^∗∗R = rough form.