SHANGHAI, China (AFP) — The northern Chinese city of Tianjin on Sunday advised its nearly 14 million people to stay home while it conducted mass Covid testing after a spate of recent cases, including two caused by the Omicron variant, state-controlled media reported. Tianjin emerged as a new area of concern after more than 20 Covid cases were reported there in the last few days, most of them imported from abroad, according to the National […]