Volume 14, Number 5—May 2008
Research
Increasing Incidence of Listeriosis in France and Other European Countries
Véronique Goulet*
, Craig Hedberg*†, Alban Le Monnier‡, and Henriette de Valk*
, Craig Hedberg*†, Alban Le Monnier‡, and Henriette de Valk*Table 5
Description of the diversity, according to serovar, of Listeria monocytogenes strains isolated in 2006 for strains belonging to serovars 1/2a, 1/2b, 1/2c, and 4b
| Characteristic | 1/2a | 1/2b | 1/2c | 4b | Total |
|---|---|---|---|---|---|
| No. L. monocytogenes strains | 80 | 49 | 11 | 139 | 279 |
| No. pulsotype | 42 | 26 | 6 | 28 | 102 |
| No. pulsotype found once | 32 | 18 | 4 | 13 | 67 |
| Range of frequency for each pulsotype, min–max | 1–17 | 1–10 | 1–5 | 1–30 | 1–30 |
| No. clusters | 2 | 0 | 0 | 9 | 11 |
| Index of diversity | 0.931 | 0.923 | 0.727 | 0.893 | 0.968 |
