To further investigate the possibility of recombination among the full length aPMV-1 sequences, we used seven different algorithms implemented in the RDP3 program [39, 40] . Chimeric NDV vaccine strain EU140955, which has the genotype II La Sota vaccine strain backbone and the F and HN genes from a contemporary genotype VII virus ( Figure 1C) , was included as a control to evaluate the prediction capability of the program. The predicted recombination breakpoint (detected by five methods with p-value,10 25 ) at position 7119 of the concatenated EU140955 matched correctly with the end of a SpeI restriction site of this chimeric strain where HN sequences were inserted from the KBNP-4152 strain. The MluI restriction site used to generate the chimera is within the intergenic region between M and F genes