BEIJING/SHANGHAI, Jan 26 (Reuters) - The ability of the new coronavirus to spread is strengthening and infections could continue to rise, China's National Health Commission said on Sunday, with more than 2,000 people in China infected and 56 killed by the disease. Health authorities around the world are racing to prevent a pandemic after a handful of cases of infection were reported outside China, including in Thailand, Australia, the United States and France. The mayor of Wuhan, the epicentre of the outbreak, said he expected another 1,000 new patients in the city, which was stepping up construction of special hospitals....