Covid-19 news: Conflicting results raise questions over PCR tests

The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic

Covid-19 news: Conflicting results raise questions over PCR tests
The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic