Table 2.
Molecular characterization of 344 Listeria monocytogenes clinical isolates collected from 1997 to 2013 in Poland.
| Lineage n (%) | CCs (n) | CFRa | PCR-Serogroup (n) | EC (n) | VT (n) |
|---|---|---|---|---|---|
| I | CC6 (112) | 40 (55) | IVb (112) | ECII (111) | |
| 220 (63.9) | Non-EC (1) | VT178 (1) | |||
| CC1 (59) | 30.3 (33) | IVb (59) | ECI (59) | ||
| CC2 (19) | IVb (19) | ECIV (16) | VT21 (16) | ||
| Non-EC (3) | VT31 (2); VT179 (1) | ||||
| CC315 (1) | IVb (1) | Non-EC (1) | VT93 (1) | ||
| ST704 (1) | IVb (1) | ECII (1) | |||
| CC3 (14) | IIb (14) | ECVIII (14) | VT14 (14) | ||
| CC5 (5) | IIb (5) | ECVI (5) | VT63 (5) | ||
| CC87 (5) | IIb (5) | Non-EC (5) | VT8 (5) | ||
| CC59 (1) | IIb (1) | Non-EC (1) | VT78 (1) | ||
| CC195 (1) | IIb (1) | Non-EC (1) | VT177b (1) | ||
| CC224 (1) | IIb (1) | Non-EC (1) | VT124 (1) | ||
| CC517 (1) | IIb (1) | Non-EC (1) | VT78 (1) | ||
| II | |||||
| 124 (36.1) | CC8 (21) | 69.3(13) | IIa (21) | ECV (21) | VT59 (21) |
| CC7 (16) | 20 (10) | IIa (16) | ECVII (14) | VT56 (14) | |
| Non-EC (2) | VT4 (1); 53 (1) | ||||
| CC37 (15) | 30 (10) | IIa (15) | Non-EC (15) | VT61 (15) | |
| CC155 (12) | IIa (12) | Non-EC (12) | VT45 (11); 58 (1) | ||
| CC451 (10) | IIa (10) | Non-EC (10) | VT2 (4); 140 (6) | ||
| CC14 (8) | IIa (8) | ECIII (3) | |||
| Non-EC (5) | VT2 (1); VT107 (1); VT139 (3) | ||||
| CC20 (8) | IIc (8) | Non-EC (8) | VT74 (7); VT170 (1) | ||
| CC475 (7) | IIa (7) | Non-EC (7) | VT94 (7) | ||
| CC101 (4) | IIa (4) | ECXI (3) | VT80 (3) | ||
| Non-EC (1) | VT171 (1) | ||||
| CC18 (3) | IIa (3) | Non-EC (3) | VT2 (2); VT118 (1) | ||
| CC177 (3) | IIa (3) | Non-EC (3) | VT169c (3) | ||
| CC29 (2) | IIa (2) | Non-EC (2) | VT74 (2) | ||
| CC121 (2) | IIa (2) | Non-EC (2) | VT2 (1); VT94 (1) | ||
| CC403 (2) | IIa (2) | Non-EC (2) | VT100 (2) | ||
| CC31 (1) | IIa (1) | Non-EC (1) | VT46 (1) | ||
| CC89 (1) | IIa (1) | Non-EC (1) | VT4 (1) | ||
| CC398 (1) | IIa (1) | Non-EC (1) | VT100 (1) | ||
| CC415 (1) | IIa (1) | Non-EC (1) | VT2 (1) | ||
| ST 585 (1) | IIa (1) | Non-EC (1) | VT141 (1) | ||
| CC9 (6) | IIc (6) | Non-EC (6) | VT11 (6) | ||
n, Number of isolates. CFR, the overall case fatality ratio (%) was calculated for CCs taking into account cases with known outcome represented by 10 or more isolates. aIn brackets number of cases with known outcome. bVT177 is a SLV of VT21 (ECIV). cVT169 is a single locus variant (SLV) of VT80 (ECXI). Bold type indicates new virulence types (VTs).