Table 4: Multiple nucleotide sequence alignments. The alignments were performed using the Clustal W2 sequence alignment method through MEGA X program. The table describe 99% nucleotides similarity between isolates 2,5,6,7,8 and USA isolate with some point mutations that either to be silent which can be exemplified by isolate 7,6 and 2 in position 262,264 and 261 respectively or transversion mutation in isolates 5,8 which reflect a mutation in position 276 that result in Amino acid Substitution.

261   '   '   |   '   '   '   '   '   270  '   '   '   |   '  '   '   '   '  280   '   '
Usanc001538 T G T T C C A C C A C T G A C A A T G A T G
isolate8 . . . . . . . . . . . . . . . C . . . . . .
isolate7 . C . . . . . . . . . . . . . . . . . . . .
isolate6 . . . C . . . . . . . . . . . . . . . . . .
isolate5 . A . . . . . . . . . . . . . C . . . . . .
isolate2 A . . . . . . . . . . . . . . . . . . . . .