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He hopes to reinstate parasitology and malaria research, areas that were lost by staff departures.

他希望因为员工的离开而放弃了的对寄生虫学和疟疾领域的研究能够恢复。

The germs that cause typhus and bubonic plague are carried by flea s and lice.

引起斑疹伤寒和腺鼠疫的病菌是由跳蚤和虱子传染的。