Salmonella Agona Harboring Genomic Island 1-A

isolate more phages in Brazil and neighboring countries. To date, serotyping is the only identification tool for the characterization of non-O1 strains of V. cholerae (8). However, serotyping is only performed at a limited number of laboratories. For this study, all isolates from Brazil were sent to laboratories outside the country for serotyping. This step was expensive and timeconsuming and posed risks during transit. An alternative method is the use of phages for identifying non-O1 strains. This method offers an affordable monitoring system in less-developed countries such as Brazil. Phage O6 and O34 should at least be useful for confirming the diagnosis of V. cholerae O6 and O34 infection and for differentiating V. cholerae O1 and nonO1 strains. Acknowledgment The authors are grateful to Eliseu Alves Waldman for providing valuable information.