Despite intensive investigations extending over several years, research has failed to find an animal reservoirof the virus or determine where it hides in nature between outbreaks.
尽管延续几年的强化调查,但是研究未能发现该病毒的动物储主或确定两次暴发之间它隐藏在自然界的何处。
2
Doubts persist on the natural history of the virus and further studies are needed to identify the exact reservoirof the monkeypox virus and how it is maintained in nature.