The number of confirmed COVID-19 cases worldwide has exceeded 600 million, with over 6.4 million deaths, data from Johns Hopkins University showed on Sunday.

Here is the latest:

The Chinese mainland recorded 307 confirmed COVID-19 cases on Saturday, with 259 attributed to local transmissions and 48 from overseas.

Biotechnology company Moderna said on Friday that it had sued Pfizer and BioNTech, claiming that the technology in their COVID-19 shot infringes on its patents.