The number of confirmed new coronavirus cases in the United States passed the 300,000 mark today, while more than 8,160 people have died from complications related to Covid-19. The US has about 25 per cent of all global confirmed cases, though testing across the world is uneven. The US had just 1,000 cases and about 30 deaths on March 10. New York State remains the hardest hit area of the US, with more than a third of all cases and about 40 per cent of the deaths. The data is based on a tally compiled by Johns Hopkins University.