Global coronavirus cases top 25 million

A health worker shows a Covid-19 positive test during a door-to-door test drive in Gauhati, India (Anupam Nath/AP)

The number of confirmed coronavirus cases globally has topped 25 million, according to a tally kept by Johns Hopkins University.

The US leads the count with 5.9 million cases, followed by Brazil with 3.8 million and India with 3.5 million.