The Biden administration has said it will indefinitely extend a Trump-era pandemic policy that allows the US to swiftly expel undocumented migrants.

Axar.az reports that the policy known as Title 42 is aimed at preventing the spread of Covid-19 in holding facilities, officials say. Children and some families are exempt.

At least 940,000 people have been expelled since it was issued last year.

The decision comes as migrants continue to stream to the US border, including about 210,000 in July alone.

In a statement, the US Centers for Disease Control and Prevention (CDC) said that the policy will remain in effect until the spread of Covid by non-citizens stops being a "serious danger" to public health.

The CDC said it will review the situation every 60 days.