The Israeli acuteparalysis virus (and, perhaps, the mystery virus) may have had such a devastating effect there because of the presence of a parasite called the varroa mite.
Due to gaps in the quality of acute flaccid paralysis (AFP) surveillance at subnational levels, additional undetected WPV circulation cannot be ruled out.
由于国家级以下的急性弛缓性麻痹监测质量存有差距，因此尚不能排除存在未经发现的野生脊灰病毒传播情况。
3
Also, a virus called I.A.P.V., for Israeli acuteparalysis virus, was present in almost half the colonies studied.