Sentence:  Bats host many high-profile viruses that can infect humans, including severe acute respiratory syndrome and Ebola. A recent study explored the ecological variables that may contribute to bats' propensity to harbor such zoonotic diseases by comparing them with another order of common reservoir hosts: <WSD>rodents</WSD>. 
Meaning of the word marked with <WSD> tags:  (mammal of the order Rodentia)A mammal of the order Rodentia, characterized by long incisors that grow continuously and are worn down by gnawing.