There have been concerns that protests in the US following the death in police custody of unarmed black man George Floyd could lead to a rise in Covid-19 cases.

More than 104,000 people have died in the US from the virus, and protests have taken place across the country.

Los Angeles Mayor Eric Garcetti warned the protests could become "super spreader events", while Atlanta Mayor Keisha Lance Bottoms advised those attending to get tested this week.

Dr Theodore Long, who is leading New York's contact tracing strategy, also advised protesters to get tested. He encouraged people attending rallies to wear a mask, practice proper hygiene and socially distance if possible.

However Dr William Schaffner, an infectious disease expert at Vanderbilt University, told the New York Times that as the protests were outside, the virus would be diluted somewhat. He noted that many of those taking part were young, meaning they are more likely to make a recovery if they contract the virus.

"There was literally a lot of running around, which means they’re exhaling more profoundly, but also passing each other very quickly," he said.