A COVID outbreak first discovered in the Chinese city of Nanjing has spread to five provinces and Beijing, with state media calling it the most extensive contagion after Wuhan.
Coronavirus
BBC: China battles worst COVID outbreak since Wuhan
This photo taken on July 28, 2021 shows a temporary "Fire Eye" laboratory used for Covid-19 coronavirus testing at an exhibition centre in Nanjing in China's eastern Jiangsu province.
