| Escherichia (5) |  |
| Pseudomonadaceae (1) | |
| Rhizobiaceae (10) | |
| Rickettsieae (1) | |
| Salmonella (1) | |
| Escherichia (5) | |
| Pseudomonadaceae (1) | |
| Rhizobiaceae (10) | |
| Rickettsieae (1) | |
| Salmonella (1) | |
The need for better traceability became clear after a national outbreak of salmonella illness in spring 2008 that sickened more than 1, 300 people across the country.
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