Pressure Builds on Boris Johnson Over the U.K.’s Lag in Virus Testing

(Bloomberg) -- Boris Johnson’s top medical adviser said the U.K. must learn from other countries’ experience of coronavirus testing as he warned the National Health Service may be overwhelmed by the pandemic.The admission came after days of criticism from politicians and the media that Britain’s test regime is lagging behind other nations’, including Germany and South Korea. Chief Medical Officer Chris Whitty said the U.K. is being hobbled by global supply chain bottlenec