The U.S. is temporarily restricting travel for certain passengers who recently visited Uganda, South Sudan and the ​Democratic Republic of Congo (DRC) in an effort to ‌reduce the risk of Ebola transmission.

The measures are a part of U.S. public health protocols for travellers arriving from areas affected by ​Ebola.

Here are some details:

• U.S. citizens and U.S. nationals ​who have been present in Uganda or South ⁠Sudan (and not present in DRC) within 21 days ​before arrival in the U.S. will have their air travel ​routed through designated U.S. airports for public health entry screening, CDC guidelines said on Friday.
• The requirement applies even to passengers who only ​transited through Uganda or South Sudan on a ​connecting flight, the Centers for Disease Control and Prevention said.
• The agency said ‌travelers, ⁠including U.S. citizens and U.S. nationals, who have been in DRC within 21 days before departure would not be allowed to board commercial flights with U.S. destinations.
• Those ​travelers should remain ​outside the ⁠U.S. until 21 days have passed since they left DRC, it said.
• Travelers who have ​been in Ebola outbreak-affected provinces in DRC ​may ⁠face additional travel requirements imposed by local authorities before they are permitted to leave the country, according to CDC.
• If ⁠Ebola is ​suspected, patients will be transferred ​to a hospital for medical evaluation, isolation and care.