To determine genotypic and phenotypic diversity of Salmonella Enteritidis strains isolated from poultry, waterfowl and humans.

1.- To determine genotypic diversity among S. Enteritidis strain. 2.- To determine phenotypic diversity among S. Enteritidis strains. 3.- To determine hosts associated genotypes and phenotypes. 4.- To determine the pathogenic potential to the human host of S. Enteritidis strains isolated from waterfowl and poultry.