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Table 1 Characteristic of the study population

From: Dengue virus infection-enhancement activity in neutralizing antibodies of healthy adults before dengue season as determined by using FcγR-expressing cells

Variable   Total (n) DENV IgG positive a N (%) Crude OR 95% C.I p-value
Before dengue season   100 34 c (34.00)    
Age group (years) 20–30 74 20 (58.82) 1.00   0.05
30–40 22 12 (35.29) 3.24 1.21–8.66  
≥40 4 2 (5.88) 2.70 0.35–20.48  
Gender Male 27 11 (32.35) 1.00   
Female 73 23 (67.65) 0.67 0.27–1.68 0.39
DENV IgM b Negative 94 34 c (100.00)    
Positive 6 0 (00.00)    
After dengue season   100 52 d (52.00)    
Age group (years) 20–30 74 35 (67.31) 1.00   0.25
30–40 22 14 (26.92) 1.95 0.73–5.20  
≥40 4 3 (5.77) 3.34 0.33–33.63  
Gender Male 27 19 (36.54) 1.00   0.02
Female 73 33 (63.46) 0.34 0.13–0.92  
DENV IgM b Negative 82 40 (76.92) 1.00   
Positive 18 12 (23.08) 2.10 0.71–6.23 0.17
  1. Crude OR Crude odds ratio, 95% C.I 95% confidence interval
  2. a DENV IgG result was as determined by using in-house DENV IgG Elisa and DENV IgG indirect Elisa (Panbio)
  3. b DENV IgM result was determined by using an in-house DENV IgM Elisa test
  4. c These 34 individuals were considered as asymptomatic secondary infection (S.I) cases
  5. d Out of 52 individuals, 34 had DENV IgG before the dengue season and continue to have elevated DENV IgG after the dengue season, the remain 18 had only DENV IgG after the dengue season