Travel restrictions are in effect across the United States and Canada.
Here are the latest travel restrictions.
WASHINGTON (AP) — Travel restrictions on Sunday affect people who have a medical condition that can make them vulnerable to heart attacks, strokes or other serious health problems.
The Centers for Disease Control and Prevention issued a travel alert for people with diabetes, congestive heart failure and stroke.
In Ohio, there are new restrictions on flying to Canada and to Mexico, the first states to impose restrictions.
In California, the state Department of Motor Vehicles says it is issuing new rules on driving to places where passengers may be vulnerable to theft or fraud.
A similar ban is in effect in Oregon, which is also on lockdown.
In Texas, officials say people without valid IDs will be able to go to certain locations.
In Maryland, authorities say there are additional restrictions in place for people traveling to Puerto Rico and Hawaii.
Authorities in Alabama say people traveling from the United Kingdom will have to check in at their destination and report any suspicious activity to the authorities.
There are additional new restrictions in California and New York.
At least 15 people have been killed in the U.S. by people with contagious diseases, the highest number since World War II.
Some of the new restrictions are part of a broad effort to curb the spread of a new strain of coronavirus.
Cities and counties across the U