Coronavirus live news: Hong Kong man's second Covid-19 infection gives rise to immunity concerns

Man cleared of virus in Aprilbut has now tested positive again; France to imposereciprocal quarantine on travellers returning from UK; ‘Very low evidence’ for plasma therapy authorised by Trump — WHOOxford University Covid-19 vaccine firm denies Trump talksChina has been giving potential vaccine to key workers since JulyUK coronavirus – liveSee all our coronavirus coverage3.19pmBSTA Hong Kong man who recovered from Covid-19 was infected again four-and-a-half months later in the first documented instance of human re-infection, researchers at the University of Hong Kong said on Monday.The findings indicate the disease, which has killed more than 800,000 people worldwide, will continue to spread amongst the global population despite herd immunity, they said.3.02pmBSTIn Greece, teachers and students will be required to wear masks in class and indoor spaces when schools reopen in September, Reuters reports.The rise in coronavirus cases in recent weeks has forced Greek authorities to gradually reimpose restrictions to curb the spread of Coronavirus.Continue reading...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Coronavirus outbreak World news Science Infectious diseases UK news US news Australia news Microbiology Medical research Source Type: news