The US virus death toll has surpassed 50,000, according to data from Johns Hopkins University, in what is the world's deadliest Covid-19 outbreak.

More than 3,000 deaths came in the last 24 hours, and there are now over 870,000 confirmed cases nationwide.

But the US still has a lower mortality rate than most European nations based on current case counts, as the White House task force has emphasised.

Recent rises are also likely due to the inclusion of "probable" virus deaths.

The US has by far the highest death toll and case count in the world.

However, it has a population of 330 million, much higher than other worst-affected countries such as Spain and Italy.