A girl wearing a surgical mask at a railway station in southern China, where panic has spread over an unidentified virus CHEMISTS and stores have been swamped by people in parts of southern China fearing a mystery lung virus. Some people were wearing surgical mask in the streets, despite doctors insisting that rumours were unnecessarily fanning public fears. About 300 people were in hospital with pneumonia caused by the virus, one-third of them doctors, nurses and other health workers, an official of the provincial Disease Prevention and Control Centre said. But doctors said that so far only five people...