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Table 3 Prevalence, attack rate, and distribution by sex and age of patients with co-infections

From: Co-circulation and simultaneous co-infection of dengue, chikungunya, and zika viruses in patients with febrile syndrome at the Colombian-Venezuelan border

  DENV/CHIKV (N = 12) DENV/ZIKV (N = 10) CHIKV/ZIKV (N = 8) DENV/CHIKV/ZIKV (N = 3) p
Male % (N) 50.0 (6) 0 (0) 12.5 (1) 0 (0) n/a
Female % (N) 50.0 (6) 100 (10) 87.5 (7) 100 (3) n/a
Age, Years (mean ± SEM) 23.2 ± 4.6 26.5 ± 2.6 30.1 ± 2.9 30.3 ± 4.2 0.492a
Year (s)
 0–10 33.3 (4) 0 (0) 0 (0) 0 (0) n/a
 11–20 16.7 (2) 20.0 (2) 12.5 (1) 0 (0) 0.876c
 21–30 16.7 (2) 50.0 (5) 25.0 (2) 33.3 (1) 0.475b
 31–40 16.7 (2) 30.0 (3) 50.0 (4) 66.7 (2) 0.879a
 41–50 8.3 (1) 0 (0) 12.5 (1) 0 (0) n/a
 Older than 50 8.3 (1) 0 (0) 0 (0) 0 (0) n/a
Laboratory diagnosis
 Prevalence % (95% CI) 7.6 (3.5–11.8) 6.4 (2.6–10.2) 5.1 (1.6–8.5) 1.9 (0.0–4.1) 0.205 c
 Attack rate × 100,000 Inhabitants 14.9 × 105 12.4 × 105 9.9 × 105 4.9 × 105 n/a
  1. *p < 0.05 = statistically significant
  2. aKruskal-Wallis test
  3. b One-way ANOVA
  4. c Chi-squared (Χ 2 )