SEOUL/BEIJING (Reuters) - The streets of South Korea's fourth-largest city were abandoned on Thursday, with residents holed up indoors after dozens of people caught the new coronavirus in what authorities described as a "super-spreading event" at a church. The deserted shopping malls and cinemas of Daegu, a city of 2.5 million people, became one of the most striking images outside China of an outbreak that international authorities are trying stop from becoming a global pandemic. In China, where the virus has killed more than 2,100 people and infected nearly 75,000, officials changed their methodology for reporting infections, creating new doubt about data they have cited as evidence their containment strategy is working.