Concerns spread Monday on Chinese social media that visitors to Qingdao might have taken the virus home with them. A popular destination known for its beaches and beer, Qingdao handled more than 4.4 million tourist visits over the holiday, according to government statistics. The Qingdao government said Monday that it had tested close to 280,000 potential contacts as of noon and that it aimed to test everyone in the city within five days. Chinese authorities remain on high alert for potential Covid-19 outbreaks despite having largely brought the pandemic under control within the country’s borders. On Monday, the National Health Commission dispatched a working group to Qingdao to help with epidemic-prevention efforts, state broadcaster China Central Television reported. Several cities discouraged travel to Qingdao and urged residents who had visited there recently to report to authorities and get tested immediately. While the daily new-case counts in the U.S. and […]