The Israeli acute paralysis 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.

• 以色列急性麻痹病毒（或许还要加上那种神秘的病毒）产生如此毁灭性的效果，或许是因为一种叫做瓦螨的寄生虫。