The gypsy moth is also subject to attack by the nucleopolyhedrosis virus, or wilt disease, a particularly important killer of the caterpillars in outbreak years.
舞毒蛾还会受到核多角体病毒或萎蔫病的攻击，在毛虫爆发的年代，这是一种特别重要的杀手。
Tracking the spread of a disease is an important step in stopping its outbreak.
追踪疾病的传播是阻止其爆发的重要一步。
No one starved, there was no mass outbreak of disease, people received medical attention.
没有人忍饥挨饿，也没有大规模爆发疾病，人们收到了很好的治疗。
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