Acknowledgements
The present work was supported by Fundação de Amparo à Pesquisa do Estado da Bahia - FAPESB (Government of Brazil). The authors also thank the “Biotecnologia e Ecologia de Micro- rganismos” laboratory staff who collaborated with us in this study and Dr. Fernando França da Cunha for helping with the statistical analyses. Dr. Steven Hagens generously provided us with the bacteriophage P100.