The Nipah Virus (NiV) is on WHO’s list of most deadly zoonotic diseases. Known to originate from bats, the virus has been traces to Malaysia in the late 20th century. Over the past 20 years, outbreaks have been recorded in Malaysia, Bangladesh and India. In 2018, a large Nipah outbreak took over the state of Kerala in India and was suspected to start from local colonies of fruit bats. There was no official vaccine or standardized treatment protocol and the mortality rate for the NiV outbreaks ranged from 70-98%, making it highly deadly. As the virus is known to be originated from bats, this academic paper explores the virulence of the Nipah virus along with bats as evolutionary hosts of Nipah. The common fruit bat species Pteropus medius is associate with this virus and displays a range of immune responses that may be attributed to hosting many viruses without suffering high mortality rates like humans. These evolutionary trade-offs and other behaviours of this bats species are further explored in this paper.