China’s Tianjin testing all residents after omicron found

BEIJING (AP) — A major Chinese city near Beijing has begun mass testing of its 14 million residents after a cluster of 20 children and adults tested positive for COVID-19, including at least two with the omicron variant. The testing in Tianjin is to be completed over two days. China has stepped up its zero tolerance COVID-19 strategy in the run-up to the Winter Olympics, which open Feb. 4 in Beijing. Fifteen students from 8 to 13 years old are among those who tested positive in Tianjin. The others include a staff member at an after-school center and four parents. Elsewhere, millions of people are being confined to their homes in Xi’an and Yuzhou, two cities that are farther away but have larger outbreaks traced to the delta variant.