Two Nipah virus cases in India’s West Bengal have triggered heightened airport screening across Asia, as countries move to prevent cross-border spread during peak holiday travel. While the virus is deadly, health officials say the outbreak is contained, human-to-human transmission is limited, and the risk of a global pandemic remains low. Two Nipah virus cases in India’s West Bengal have triggered heightened airport screening across Asia, as countries move to prevent cross-border spread during peak holiday travel. While the virus is deadly, health officials say the outbreak is contained, human-to-human transmission is limited, and the risk of a global pandemic remains low.