Covid-19 update: Can patients catch the virus twice?

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News and analysis 

• The 277 South Korean Covid-19 ‘reinfection cases’ that originally prompted fears over multiple infections were in fact false positives, according to researchers at Seoul University. Ross Clark has the details below.
• We are past the peak according to Boris Johnson in his first coronavirus briefing since falling ill. The PM says he will release a road map next week for easing lockdown.
• The NHS will get ‘first dibs’ on any Covid-19 drug produced by Oxford university and AstraZeneca.
• The government is ‘either going to meet, or come very close’ to its 100,000 tests a day target, says Robert Jenrick.
• Three quarters of restaurants and bars will not be financially viable if forced to reduce customer numbers to maintain social distancing, according to evidence to be put before parliament today.
• The