aAll samples were tested in duplicate. Positive samples were confirmed in triplicate
bPools 4 and 6 had repeatable results on the original pooled sample
cT69, T70 and T71 yielded a product on hemi-nested PCR whose sequence differed by one nucleotide from a pig isolate in Bulacan province
dMean value of the duplicates
eAdditional M. schreibersii samples from a pool which tested negative in the original round