The Analysis of Yellow Fever Virus Antibody in Human Serum from Epidemic Areas of Tianjin Port, 2013

Objective: To investigate the prevalence and distribution characteristics of yellow fever virus antibody in human serum from epidemic areas of Tianjin port in 2013 and assess the situation of yellow fever virus in different countries in order to provide evidence for the prevention and control of yellow fever virus. Methods: The people from epidemic areas were selected as study object. 260 samples were collected together with detailed personal information. Each sample contained 5 ml venous blood. ELISA was used to detect the yellow fever virus antibody. The dengue virus antibody and west Nile virus antibody were detected in positive samples. Statistical analysis was used to compare differences of the positive rates between different nationalities, gender, occupation, age, and entry time. Results: All respondents came from Africa and South America, the total positive rate of serum antibody to yellow fever virus was 25.38%. Of which, the positive rate of South American personnel was relatively high, up to 27.27%. There was no significant difference in positive rate between different genders. The >40 year old age group was the highest, up to 42%. The positive rate of labor workers was relatively high, up to 45.24%. In the time distribution, the positive rate of fourth-quarter entry personnel was relatively high, up to 31%. Conclusion: The yellow fever vaccination rate of people from epidemic areas in 2013 was low. These people pose a threat to public health security of china as a potential source of infection. There was a significant difference in the detection rate of yellow fever virus antibody among people with different ages and occupations