Chinese state media reported that there had been 291 cases of patients infected with the virus as of Jan. 20.

Data from IHS Markit showed five-year credit default swaps up three basis points versus Monday's close to 33 bps, the highest in nearly two weeks.

The fears have rippled across Chinese and Asian markets, with the yuan down around 0.6% versus the dollar and Chinese stocks tumbling 1.4% .

(Reporting by Sujata Rao; editing by Marc Jones)