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Table 1 Seroprevalence and symptoms of strongyloidiasis according to age groups

From: Strongyloidiasis in northern Vietnam: epidemiology, clinical characteristics and molecular diagnosis of the causal agent

  Age groups (years)a
16–25 26–35 36–45 46–55 56–65 > 65
Seroprevalence 19.46 (58/298) 19.02 (70/268) 19.27 (69/358) 20.50 (68/322) 20.45 (73/357) 21.55 (64/297)
Diarrhoea 53.45 (31/58) 60.00 (42/70) 65.22 (45/69) 65.15 (43/66) 67.12 (49/73) 75.00 (48/64)
Digestive disorder 51.72 (30/58) 52.85 (37/70) 56.52 (39/69) 62.12 (41/66) 58.90 (43/73) 65.63 (42/64)
Stomachache 43.10 (25/58) 41.42 (29/70) 44.93 (31/69) 45.45 (30/66) 47.95 (35/73) 50.00 (32/64)
Stomach and duodenal ulcers 39.66 (24/58) 42.85 (30/70) 44.93 (30/69) 43.94 (28/66) 45.21 (32/73) 51.56 (33/64)
Itching 24.14 (14/58) 24.29 (17/70) 24.64 (17/69) 28.79 (19/66) 31.51 (25/73) 34.38 (22/64)
Fever 5.17 (2/58) 7.14 (5/70) 10.14 (7/69) 9.10 (6/66) 10.96 (8/73) 14.06 (9/64)
Bloody stool 3.45 (2/58) 5.71 (4/70) 8.70 (6/69) 9.10 (6/66) 9.59 (7/73) 10.94 (7/64)
  1. aData are given as prevalence (in %) (no. of positive patients/no. of examined patients)