American Health Officals say that anyone fine to the United States will soon need to show prove of a negative test for covid-19. The new restrictions take effect on January 26. The order from the centers for disease control and prevention (CDC) requires air passengers to get a covid-19 test within 3 days of their flight to the US. Airlines are ordered to stop passengers from boarding if they do not have prove other negative test. Traverllers can also provide documentation that they had the infection in the past and recovered. All air travellers aged 2 and older must follow the CDC order. However, passengers who only have a stopover in the US before flying to another country do not have to provide prove of a negative covid test. The orders affect US's citizens as well as foreign travellers. The health agency said it delayed the starting day unitl January 26th to give airlines and travellers time to meet the requirements. The CDC says it will consider exceptions of testing reqirements for airlines flying from countries with little or no testing abilities, including some places in the *. The extended travel order is similar to one announced late last month for a passenger's coming from Britain. It is designed to try to prevent travellers from bringing in new forms of the virus that scienteists say can spread more easily. "Testing does not eliminate all risk." CDC director ** said in a statement. ** added, "when combined with other preventative measures, testing can make travel safer, healthier and more responsible by reducing spread on planes, in airports and at destinations. "It is likely that the recently identified version of the virus from Britain is in every state or most state. said Doctor **. He is dean of round university's school of public health in *. So far,10 US states have reported 72 cases up the new form. Covid-19 is already widespread in the US with more than 22.8 million cases reported. John's * university reports that more than 380000 people have died and the country recorded 432700 coronavirus related death on Tuesday, a one day record high. But the new order may stop or reduce spread of other versions of the virus, like the one recently indentified in South- Africa. Airlines have been pushing for pre-flight testing, instead of continued travel restrictions between the US and the rest of the world. ** is a spokeswoman for United airlines. She said testing is key to unlocking international boarders and safely reopening global travel. Others say the CDC order is unlikely to cause an immediate increase in international travel. Henry * is a travel expert with * research group. He told the Associated Press people are being encouraged by their public health authorities to not travel, even domestically. He added that he does not expect air travel to increase until the summer after more people have been vaccinated.