A "wartime state" has been declared in Urumqi, the capital of China's western Xinjiang region, after a spike in cases of coronavirus. Officials on Saturday said 17 new cases had been recorded and strict measures on movement had been imposed. Although the figure appears low, China has recorded very few significant outbreaks since Covid-19 emerged in the city of Wuhan late last year. China is now not in the top 20 in terms of either infections or deaths.