Syphilis epidemiological characteristic analysis in Inner Mongolia Autonomous Region from 2010 to 2016

LIU Jing; YANG Jing-yuan; GONG Xiang-dong; PEI Ying-xin; JIAO Yue-ying

doi:10.3969/j.issn.1007-8134.2018.05.010

Abstract：Objective This study aims to understand epidemiological characteristics and trend of syphilis in Inner Mongolia Autonomous Region and provide evidence of control strategy formulated by health administrative department. Methods Descriptive epidemiology analysis was performed to study reported syphilis records from 12 cities of Inner Mongolia Autonomous Region from 2010 to 2016. Results The reported incidence of syphilis increased from 25.14 per 100 thousands in 2010 to 40.18 per 100 thousands in 2016. Average annual growth rate was 8.13%. Annual incidence rate was higher than 50.00 per 100 thousands in high-prevalence areas including Alashan Meng (74.29 per 100 thousands), Wuhai City (65.61 per 100 thousands), Xilinguole Meng (58.75 per 100 thousands) and Baotou City (52.64 per 100 thousands). Reported female cases with syphilis were much more than male cases, and gender ratio was 0.86∶1. Age groups over 20, 25 and 30 years had higher incidence rates, accounting for 11.32%, 12.40% and 10.40% of all syphilis cases, respectively. Among the 20 categories of population reported in the national standards, housework and unemployed people showed the highest incidence rate, accounting for 36.01%. With the growth in the incidence of the phase 2 and latent syphilis, the proportion of the phase 2 and latent syphilis reported cases in total syphilis cases also increased. The proportion of phase 2 syphilis increased from 10.68% in 2010 to 12.86% in 2016. The proportion of latent syphilis increased from 57.36% in 2010 to 62.17% in 2016. Conclusions Reported syphilis incidence rate is increasing in Inner Mongolia Autonomous Region. It's urgent to standardize the diagnosis and treatment of syphilis, popularize knowledge of syphilis to young adults, houseworkers and unemployed people, advocate safe sex behavior and adopt related prevention measures to control syphilis.