Two cases of the deadly Nipah virus in India have prompted authorities in several Southeast Asian nations including Thailand, Malaysia, Singapore and Indonesia to step up airport screening to prevent the spread of the infection. But what is Nipah virus, and how worried should people be?<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
