[Analysis for serological diagnostic results of syphilis among entry personnel in Beijing port during 2012-2014].
OBJECTIVE
To analyze the results of syphilis specific serological tests among entry personnel in Beijing port during year 2012-2014 in order to provide evidence for the prevention and control of syphilis.


METHODS
Demographics data and syphilis specific test results of entry personnel were obtained from the information system of Beijing International Travel Healthcare Center and input into Excel 2016. Database for entry personnel was built up accordingly and was analyzed by IBM SPSS22.0.


RESULTS
The number of entry personnel in Beijing port during year 2012-2014 was 106 302 person-time. According to the evaluation criteria, 71 308 persons were recruited and analyzed, of whom 277 were tested serologically positive and the total prevalence was 0.39% (95% CI: 0.34%-0.43%). The prevalence was highest in the persons aged 40-49 years (0.81%) and was higher in males (0.50%) than in females (0.23%). The persons from Africa held higher prevalence (1.27%) than from other five regions. As multivariate logical regression analysis indicated that the risk of syphilis infection was 10.38 times more in the persons aged 40-49 years than in the persons <20 years (95%CI:5.59-19.28), and 1.85 times more in males than in females (95%CI: 1.40-2.44). For the people from Africa, South America and Asia, the infection risks were respectively 4.89 times (95%CI: 2.97-8.06), 4.82 times (95%CI: 2.39-9.74) and 1.72 times (95%CI: 1.15-2.59) more than that for the people from North America. Rising trend of the prevalence was observed in both genders by age groups (P value for trend χ(2)<0.05). Except for Asia, the prevalences of the people from other five regions were rising slightly by years, however there were no obvious trends (P value for trend χ(2)>0.05). Twenty-seven seropositive cases were found within 6 246 entry persons who were tested repeatedly during the research period, 9 of which were seroconversion cases so that the cumulative conversion rate was 0.14% (9/6 228). The average conversion time was (6.3±3.0) months. There was no statistical significance between the cumulative seroconversion rates of the persons with different genders and nationalities (P of Fisher's exact test>0.05).


CONCLUSIONS
Serological detection of syphilis for entry personnel in Beijing port and syphilis-related health education should be reinforced to reduce the risk of disease importing and spreading, protect susceptible subjects and promote health.
Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China.
M X
MX
Feng
Beijing International Travel Health Care Center, Beijing 100094, China.
F J
FJ
Sun
Beijing International Travel Health Care Center, Beijing 100094, China.
F
F
Wang
Beijing Entry-Exit Inspection and Quarantine Bureau, Beijing 100026, China.
K L
KL
Wang
Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China.
M
M
Liu
D000068476:Beijing / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D013587:Syphilis / Q000175:diagnosis* / Q000453:epidemiology; D014195:Travel