The United States tightened entry requirements again. Because from January 26th, every air traveler needs a negative Covid-19 test.

From now on, this must be done within three days before departure, as the health authority CDC announced. The respective airlines should check compliance. Only those who can present a valid certificate are allowed on board. The authority also recommends to be tested again in the three to five days after entry and not to go outside for seven days, it says in the Travel Weekly. "Tests do not rule out all risks," said CDC director Robert Redfield. "But when combined with home quarantine and everyday precautions like wearing a mask and keeping your distance, they can make travel safer."