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Table 5 Prevalence and 95% confidence intervals (in parentheses) of the enteric protozoan species identified in stool samples from the investigated population (n = 766) by conventional microscopy, Paranaguá, Paraná, Brazil, 2015–2016

From: Prevalence of intestinal parasites, with emphasis on the molecular epidemiology of Giardia duodenalis and Blastocystis sp., in the Paranaguá Bay, Brazil: a community survey

Variable

N

Pathogenic

Uncertain pathogenicity

Commensals

Giardia duodenalis

Blastocystis sp.

Entamoeba complex

Endolimax nana

Iodamoeba bütschlii

Entamoeba coli

Entamoeba hartmanni

Chilomastix mesnilii

Retortamonas intestinalis

Community

 Ilha do Mel1

46

6.5 (1.7–16.7)

28.3 (16.7–42.5)

6.5 (1.7–16.7)

15.2 (6.9–27.8)

0 (0.0–6.3)

6.5 (1.7–16.7)

6.5 (1.7–16.7)

0 (0.0–6.3)

2.2 (0.1–10.3)

 Ilha do Teixeira1

58

3.4 (0.6–10.9)

22.4a* (13.1–34.5)

0 (0.0–5.0)

31.0d**, e**, f** (20.2–43.8)

0 (0.0–5.0)

3.4 (0.6–10.9)

0 (0.0–5.0)

0 (0.0–5.0)

0 (0.0–5.0)

 Ilha do Amparo1

90

13.3 (7.4–21.6)

41.1a*, b** (31.3–51.5)

0 (0.0–3.3)

27.8g**, h**, i** (19.3–37.7)

0 (0.0–3.3)

3.3 (0.9–8.8)

4.4 (1.4–10.4)

1.1 (0.1–5.4)

1.1 (0.1–5.4)

 Jardim Esperança2

221

14.5 (10.3–19.6)

32.6 (26.6–39)

2.7 (1.1–5.6)

14.5d**, g** (10.3–19.6)

2.3 (0.8–4.9)

2.7 (1.1–5.6)

5.0 (2.6–8.5)

0.9 (0.0–2.3)

0 (0.0–1.3)

 Ilha dos Valadares2

286

10.1 (7–14.1)

20.3b**, c** (15.9–25.2)

1.0 (0.3–2.8)

8.7e**, h** (5.9–12.5)

0 (0.0–1.0)

5.6 (3.3–8.7)

3.8 (2.0–6.6)

0 (0.0–1.0)

0 (0.0–1.0)

 Ponta do Caju2

65

9.2 (3.8–18.2)

35.4c** (24.5–47.5)

3.1 (0.5–9.8)

10.8f**, i** (4.8–20.1)

0 (0.0–4.5)

3.1 (0.5–9.8)

3.1 (0.5–9.8)

0 (0.0–4.5)

0 (0.0–4.5)

Gender

 Male

382

13.4j* (10.2–17)

28.0 (23.7–32.7)

1.8 (0.8–3.6)

14.9 (11.6–18.8)

0.8 (0.2–2.1)

3.5k* (1.8–6.2)

3.9 (2.3–6.3)

0.5 (0.1–1.7)

0.3 (0–1.3)

 Female

384

8.6j* (6.1–11.7)

28.4 (24.0–33.1)

1.8 (0.8–3.6)

14.8 (11.6–18.7)

0.5 (0.1–1.7)

5.7k* (3.7–8.4)

4.2 (2.5–6.5)

0.3 (0.0–1.3)

0.3 (0.0–1.3)

Age group (years)

 0–4

66

13.6l* (6.9–23.6)

25.8 (16.3–37.3)

0 (0.0–4.4)

12.1 (5.8–21.7)

0 (0.0–4.4)

4.5 (1.2–11.9)

1.5 (0.1–7.2)

0 (0.0–4.4)

0 (0.0–4.4)

 5–9

412

13.3m** (10.3–16.9)

26.9 (22.8–31.4)

1.5 (0.6–3.0)

10.4n**, o*, p** (7.8–13.7)

0.7 (0.2–2.0)

2.9 (1.6–4.9)

3.4 (2.0–5.5)

0.2 (0.0–1.2)

0 (0.0–0.7)

 10–14

146

9.6 (5.6–15.2)

31.5 (24.4–39.4)

2.7 (0.9–6.5)

21.9p** (15.7–29.2)

1.4 (0.2–4.5)

8.2 (4.5–13.6)

6.8 (3.5–11.9)

1.4 (0.2–4.5)

0.7 (0.0–3.3)

 15–34

52

5.8 (1.5–14.9)

30.8 (19.4–44.2)

1.9 (0.1–9.1)

21.2o* (11.7–33.8)

0 (0.0–7.0)

5.8 (1.5–14.9)

3.8 (0.7–12.1)

0 (0.0–5.6)

0 (0.0–5.6)

 > 34

90

3.3l*, m** (0.9–8.8)

28.9 (20.2–38.9)

3.3 (0.9–8.8)

22.2n** (14.5–31.7)

0 (0.0–3.5)

2.2 (0.4–7.1)

4.4 (1.4–10.4)

0 (0.0–3.3)

1.1 (0.1–5.4)

Total

766

11.0 (8.9–13.3)

28.2 (25.1–31.5)

1.8 (1.0–3.0)

14.9 (12.5–17.5)

0.7 (0.2–1.4)

4.2 (2.9–5.8)

4.0 (2.8–5.6)

0.4 (0.1–1.1)

0.3 (0.0–0.9)

  1. Abbreviation: N number of samples
  2. *P < 0.05, **P < 0.01: Statistically significant relationships between two given data for a specific variable were identified with superscript (a to p) letters
  3. 1Insular or poorly accessible settings
  4. 2Urban or peri-urban settings