Syphilis cases on the rise

China now has about 3 million cases of syphilis, and incidents of the sexually transmitted disease are on the rise, health experts warn.

Last year, 450,000 syphilis cases were detected, making it one of the top-five infectious diseases in the country, the National Health and Family Planning Commission said.

The incidence rate doubled over 10 years to more than 30 out of 100,000 people in 2013, said Chen Xiangsheng, deputy director of the National Center for Sexually Transmitted Disease Control in Nanjing, Jiangsu province.