GENEVA - There may have been limited human-to-human transmission of a new coronavirus in China within families, and it is possible there could be a wider outbreak, the World Health Organization (WHO) said on Tuesday. Coronaviruses are a large family of viruses that can cause infections ranging from the common cold to SARS. A Chinese woman has been quarantined in Thailand with a mystery strain of coronavirus, Thai authorities said on Monday, the first time the virus has been detected outside China. In all, 41 cases of pneumonia have been reported in the central Chinese city of Wuhan, which preliminary...