Figure 1

The source of the isolate is provided by a two letter code followed by a unique identifying number; an underscore separates the year of isolation from the identifying number. Source abbreviations: AH, Abu Homos, BH, Benha; MH, Mokattum Hills. PK, Pakistan; QEN, ASW, MAL, ABS, P, D, Q,R, S, different regions from upper Egypt and Cairo. Antibiotic resistance profile abbreviations are as follows: AM, ampicillin resistance; C, choramphenicol resistance; E, erythromycin resistance; TE, Tetracycline resistance; SXT, trimethoprim-sulfamthoxazole resistance. Clonal distance is shown after whole genomic digestion using the restriction enzyme xbaI. All samples were normalized against the pattern of Salmonella enterica ss. Enterica serotype Braenderup strain H9812. Band pattern analysis was performed using Bionumerics vs 4.5 and dendrogram was calculated using Dice similarity coefficients, based on the unweighted pair group method with arithmetic averages (UPGMA).