Airlines and passengers are on guard against a new flu-like virus that originated in Wuhan, China. Many airlines, including Korean Air Lines, Singapore Airlines’ budget carrier Scoot, Taiwan’s China Airlines and Japan’s ANA, announced they were cancelling flights in and out of Wuhan after authorities announced a lockdown. South Korean budget carrier T’way Air earlier this week postponed the scheduled launch of a new route to the city. On Thursday, 184 flights to/from Wuhan, or 60% of the departures listed for the day, had been cancelled.