BEIJING: A rash of coronavirus cases in schools and businesses were reported on Friday in areas across China after its ruling Communist Party loosened anti-Covid-19 rules as it tries to reverse a deepening economic slump.While official data showed a decrease in new cases, they no longer cover large parts of the population after the government on Wednesday ended mandatory testing for many people. That was part of dramatic changes aimed at gradually emerging from 'zero-Covid' restrictions that have confined millions of people to their homes and sparked protests and demands for President Xi Jinping to resign.'There [are] very few people coming in because there [are] so many cases,' said Gang Xueping, a waitress in the capital Beijing. 'The country's just opened up. The first one or two months [are] definitely going to be serious. Nobody's used to this yet.'In other cities, social media users said coworkers or classmates were ill and some businesses had closed due to a lack of staff. It wasn't clear from those accounts, many of which couldn't be independently confirmed, how far above the official figure the total case numbers might be.'I'm really speechless. Half of the company's people are out sick, but they still won't let us all stay home,' said a post signed Tunnel Mouth on the popular Sina Weibo platform. The user gave no name and didn't respond to questions sent through the account, which said the user was in Beijing.The reports echo the experience of the United States, Europe, and other countries that have struggled with outbreaks while trying to restore business activity. But they are a jarring change for China, where its zero-Covid policy, which aims to isolate every case, disrupted daily life and depressed economic activity but kept infection rates low.Xi's government began to loosen controls on November 11 after promising to reduce their cost and disruption.'Relaxing Covid controls will lead to greater outbreaks,' Neil Thomas and Laura Gloudeman of Eurasia Group said in a report. 'But Beijing is unlikely to return to the extended blanket lockdowns that crashed the economy earlier this year.'The changes suggest the ruling party is easing off its goal of preventing virus transmission, the basis of zero Covid, but officials say that strategy is still in effect.Restrictions probably must stay in place at least through mid-2023, public health experts and economists say. They say millions of elderly people need to be vaccinated, which will take months, and hospitals need to be strengthened to cope with a surge in cases. Officials announced a vaccination campaign last week.On Friday, the government reported 16,797 new cases, including 13,160 without symptoms. That was down about one-fifth from the previous day and less than half of last week's daily peak above 40,000.More changes announced on Wednesday allow people with mild Covid-19 cases to isolate at home instead of going to a quarantine center that some complained were crowded and unsanitary. That addressed a major irritant for the public.A requirement for subway riders, supermarket shoppers, and others to show negative virus tests also was dropped, though they are still needed for schools and hospitals.A post signed Where Dreams Begin Under Starlight by a user in Dazhou, a southwestern city in southwestern Sichuan province, said all but five students in a public school class of 46 were infected.'It's really amazing that the school insists students go to school,' the user wrote. The user, contacted through the account, declined to give a name or other details.The requirement for hundreds of millions of people to be tested as often as once a day in some areas over the past two years helped the government spot infections with no symptoms. Ending that approach reduces the cost of monitoring employees and customers at offices, shops and other businesses. But it increases the risk they might spread the virus