Anyone flying to the U.S. will soon need to show proof of a negative test for COVID-19, health officials announced Tuesday. The CDC requirement expands on a similar one announced late last month for passengers coming from the United Kingdom. The new order takes effect in two weeks. … The new measures are designed to try to prevent travelers from bringing in newer forms of the virus that scientists say can spread more easily. The CDC order applies to U.S. citizens as well as foreign travelers. The agency said it delayed the effective date until Jan. 26 to give airlines and travelers time to comply.