The authors thank Christine Segonds and Gerard Chabanon
for providing clinical strains, Daniel van der Lelie and
Matthew B. Avison for providing, respectively, R551.3 and
K279a strains, Isabelle Lamy, Christian Dron and Sabine
Houot for sampling in Pierrelaye and Feucherolles and all the
soil surveyors involved in sampling the sites from Tunisia and
the PARMIC for providing access to the Vitek®2 system. This
work was supported by the Agence Nationale de la Recherche
(ANR) (programs 07 SEST project 018-01 and 08 CES project
012-05). We thank the CNRS (program EC2CO), the French
Agency for Energy and Environment (ADEME), and the