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Open AccessArticle

Kinetics of IgG Antibodies in Previous Cases of Dengue Fever—A Longitudinal Serological Survey

by 1,†, 2,†, 3,†, 4, 2, 2, 2 and 1,2,3,*
1
School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China
2
Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China
3
School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
4
Liwan District Center for Disease Control and Prevention, Guangzhou 510176, China
*
Author to whom correspondence should be addressed.
Equal contributors.
Int. J. Environ. Res. Public Health 2020, 17(18), 6580; https://doi.org/10.3390/ijerph17186580
Received: 24 June 2020 / Revised: 7 August 2020 / Accepted: 7 September 2020 / Published: 9 September 2020
(This article belongs to the Section Infectious Disease Epidemiology)
Guangzhou is believed to be the most important epicenter of dengue outbreaks in southern China. In this study, a longitudinal serological investigation of previous cases of dengue fever in Guangzhou was conducted to explore the persistence of IgG antibodies and related factors affecting the changes of antibody level. We recruited 70 dengue virus type 1 (DENV-1) primary infection cases at two years post infection for serological investigation and conducted a second follow-up in the 5th year of prognosis. An enzyme-linked immunosorbent assay (ELISA) for DENV IgG antibody was examined in all study subjects. Potential factors associated with the concentration of serum total IgG antibody were determined by the generalized estimation equation (GEE). No significant difference in serum total IgG antibody positive rate between two follow-ups was observed (χ2 = 3.066, p = 0.080). However, there was a significant difference in the concentration of serum total IgG antibody between the two follow-ups (Z = 7.154, p < 0.001). The GEE showed that the antibody level in the five-year prognosis was mainly affected by the antibody level in the two-year prognosis (OR: 1.007, 95%CI: 1.005–1.009). In conclusion, the serum IgG antibodies of previous dengue fever cases can persist for a long time. View Full-Text
Keywords: dengue fever; antibody; kinetics; longitudinal investigation dengue fever; antibody; kinetics; longitudinal investigation
MDPI and ACS Style

Wu, Q.; Jing, Q.; Wang, X.; Yang, L.; Li, Y.; Chen, Z.; Ma, M.; Yang, Z. Kinetics of IgG Antibodies in Previous Cases of Dengue Fever—A Longitudinal Serological Survey. Int. J. Environ. Res. Public Health 2020, 17, 6580. https://doi.org/10.3390/ijerph17186580

AMA Style

Wu Q, Jing Q, Wang X, Yang L, Li Y, Chen Z, Ma M, Yang Z. Kinetics of IgG Antibodies in Previous Cases of Dengue Fever—A Longitudinal Serological Survey. International Journal of Environmental Research and Public Health. 2020; 17(18):6580. https://doi.org/10.3390/ijerph17186580

Chicago/Turabian Style

Wu, Qilin; Jing, Qinlong; Wang, Xiujuan; Yang, Lili; Li, Yilan; Chen, Zongqiu; Ma, Mengmeng; Yang, Zhicong. 2020. "Kinetics of IgG Antibodies in Previous Cases of Dengue Fever—A Longitudinal Serological Survey" Int. J. Environ. Res. Public Health 17, no. 18: 6580. https://doi.org/10.3390/ijerph17186580

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