The document discusses Nipah virus, first identified in 1999, its transmission mainly through pigs and fruit bats, and the severe encephalitis it causes in humans with a high mortality rate. It details various outbreaks, primarily in Malaysia, Bangladesh, and India, along with preventive measures, the importance of early detection, and supportive treatment options. There is no specific cure or vaccine for Nipah virus, making control measures essential to prevent spread and manage future outbreaks.