South Australian Premier Steven Marshall says while the state is “enjoying a very different” COVID-19 situation to others, a targeted team is weighing up current restrictions with the “worrying risk just directly across our border”.

Israel became the first developed country to impose a second nationwide lockdown amid rising Covid-19 cases. As businesses are forced to close ahead of major Jewish festivals, WSJ's Dov Lieber meets restaurant owners who worry they may never reopen. Thumbnail: Amir Cohen/Reuters

The United States on Friday ordered a ban on downloads of popular Chinese-owned video app TikTok and use of the messaging and payment platform WeChat, saying they threaten national security.

A new study of more than one million people suggests those with a certain blood type are less at risk of contracting COVID-19 than others.

Reports have emerged which say the United States is preparing to ban transactions made using social media aps TikTok and WeChat, citing their links to China as a national security threat.