With a lingering government shutdown affecting travel to and from the U.S., and economic headwinds in play following instability in global stock markets, there is some concern that global business travel growth will be affected in 2019.

The latest update from the Global Business Travel Association shows that its members are seeing a significant impact from the shutdown so far; half of those polled this week have seen canceled bookings and concerns from travelers about delays and the security situation. Two-thirds of the business travel professionals polled expect a deeper impact should the shutdown linger past the end of the week.