European Union envoys on Thursday struck a preliminary agreement on having antigen tests for Covid-19 carried out in any member country recognised by all 27 countries in the bloc, diplomats said.The move, to be followed with a written procedure and discussed at an EU leaders’ summit on Thursday, aims to make Covid-19 testing more widespread and faster.Unlike PCR (polymerase chain reaction) tests that involve getting a swab from the nasal cavity behind the nose that is analysed in a lab, antigen…

This post was originally published on South China Morning Post.