Source: China – South China Morning PostGuangzhou in southern China has turned to its top laboratories and biological companies to spearhead the world’s most extensive city-run testing programme to arrest a stealthy but simmering spread of coronavirus in the metropolis.The city, which is home to 18 million people, reported four new Covid-19 cases on Thursday – more than two weeks after an infected patient was found in its urban Liwan district. So far, 119 cases have been identified, including seven asymptomatic carriers.Sun Xiang,…Read More