INTRODUCTION
At present, the global prevalence of syphilis is a serious medical issue. It is estimated that there are more than 10 million new cases of syphilis each year, with more than 90% of the cases within developing countries.1 The incidence of syphilis in China has also been increasing year by year. Fujian is a provinces with a high incidence of syphilis. The incidence of in young children with syphilis is less than 0.5/100,000 individuals, with the incidence of acquired syphilis in young children much less common.2