Volume 17, Number 6—June 2011
Dispatch
Worldwide Distribution of Major Clones of Listeria monocytogenes
Viviane Chenal-Francisque1, Jodie Lopez1, Thomas Cantinelli, Valerie Caro, Coralie Tran, Alexandre Leclercq, Marc Lecuit2, and Sylvain Brisse2
Table
Distribution of the major Listeria monocytogenes clonal complexes in lineages I and II among sources
| Lineage or clonal complexes | No. (%), by source |
Human/food ratio | |||||
|---|---|---|---|---|---|---|---|
| Total | Human | Food | Animal | Environment | Unknown | ||
| Lineage I, total | 199 (100) | 88 (44) | 60 (30) | 16 (8) | 24 (12) | 11 (6) | 1.60:1 |
| CC1 (4b) | 47 (100) | 26 (55) | 10 (21) | 4 (9) | 3 (6) | 4 (9) | 2.60:1 |
| CC2 (4b) | 64 (100) | 36 (56) | 13 (20) | 6 (9) | 5 (8) | 4 (6) | 2.77:1 |
| CC3 (1/2b) | 32 (100) | 11 (34) | 17 (53) | 1 (3) | 2 (6) | 1 (3) | 0.65:1 |
| Other 4b | 20 (100) | 8 (40) | 6 (30) | 1 (5) | 4 (20) | 1 (5) | 1.33:1 |
| Other 1/2b |
36 (100) |
7 (19) |
14 (39) |
4 (11) |
10 (28) |
1 (3) |
0.50:1 |
| Lineage II, total | 98 (100) | 29 (30) | 45 (46) | 11 (11) | 8 (8) | 5 (5) | 0.64:1 |
| CC9 (1/2c) | 28 (100) | 7 (25) | 14 (50) | 2 (7) | 3 (11) | 2 (7) | 0.50:1 |
| Other, lineage II (1/2a) | 70 (100) | 22 (31) | 31 (44) | 9 (13) | 5 (71) | 3 (4) | 0.71:1 |
1These authors contributed equally to this study.
2These authors contributed equally to this study.
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