Table 2 Prevalence of Blastocystis sp. in dogs and cats based on examined subgroups

Publication year

  Prior to and including 2000

23.2 (0.3–96.4)

26.1 (0.7–94.6)

10

7.5

1

1

90

86.6

P = 0.002

P = 0.006

 2001–2005

0.5 (0.1–2.2)

–

0.3

–

1

–

–

–

P = 0.555

–

 2006–2010

20.1 (3.4–64.6)

22.3 (9.2–44.8)

51.2

16.8

3

2

94.1

88.1

P < 0.001

P < 0.001

 2011–2015

4.5 (2.3–8.8)

6.4 (2.7–14.2)

138.1

13.6

14

4

89.8

70.6

P < 0.001

P = 0.009

 2016–2021

8.4 (5.2–13.1)

7 (2.9–15.8)

189.3

217.1

18

12

90.5

94.5

P < 0.001

P < 0.001

Continent

 Africa

3.7 (1.6–8.4)

11.4 (0.4–80)

1.5

30.6

2

2

–

93.4

P = 0.472

P < 0.001

 Asia

6 (3.3–10.4)

7.2 (3.5–14.2)

441.4

193.9

20

12

95.4

93.8

P < 0.001

P < 0.001

 Europe

3.6 (0.8–15.5)

2.3 (0.3–14.4)

23.8

0.2

4

1

93.2

0

P < 0.001

P = 0.643

 North America

5.1 (1.1–20.7)

11.4 (6.6–19.1)

4.3

0

1

0

76.6

0

P = 0.032

N.A

 Oceania

7.5 (0.7–48.3)

11.3 (0.3–82.9)

129.9

18.5

4

2

96.9

89.2

P < 0.001

P < 0.001

 South America

16 (7.7–30.4)

37.4 (31.4–43.8)

60.3

0

5

0

91.7

0

P < 0.001

N.A

WHO region

 AFR

11.1 (1.5–50)

15 (0.2–94.2)

–

28.9

0

1

0

96.5

N.A

P < 0.001

 AMR

14.6 (7.5–26.3)

22.2 (6–56.1)

196.3

20.8

8

1

95.9

95.2

P < 0.001

P < 0.001

 EMR

3.2 (1–9.3)

16.8 (10.1–26.6)

66.7

20.2

5

5

92.5

75.3

P < 0.001

P = 0.001

 EUR

2.1 (0.5–8.8)

3.8 (1.4–9.9)

48.3

23.3

6

4

87.6

82.8

P < 0.001

P < 0.001

 SEAR

11.3 (4.3–26.5)

23.4 (1.3–87.6)

31.9

5

5

1

84.3

80

P < 0.001

P = 0.025

 WPR

6 (2.2–15.1)

3.1 (0.2–38.6)

262.9

95.8

12

5

95.4

94.8

P < 0.001

P < 0.001

 Country

 Algeria

11.1 (1.5–50)

63.2 (40.3–81.3)

0

0

0

0

0

0

N.A

N.A

 Argentina

2.9 (1.8–4.9)

–

0

–

0

–

0

–

N.A

–

 Australia

7.5 (0.7–48.3)

11.3 (0.3–82.9)

129.9

18.5

4

2

96.9

89.2

P < 0.001

P < 0.001

 Cambodia

1.3 (0.2–8.3)

–

0

–

0

–

0

–

N.A

–

 Chile

36.1 (33.1–39.2)

37.4 (31.4–43.8)

0

0

0

0

0

0

N.A

N.A

 China

3.4 (1.7–6.7)

0.6 (0.1–2.3)

6.5

0

2

0

69.4

0

P = 0.038

N.A

 Colombia

21.8 (13.9–32.6)

–

14.9

–

4

–

73.2

–

P = 0.005

–

 Cuba

2.1 (0.5–7.9)

–

0

–

0

–

0

–

N.A

–

 Egypt

3 (1.2–7.3)

5.6 (0.3–50.5)

0.04

0

1

0

0

0

P = 0.838

N.A

 France

3.4 (1.3–8.8)

–

0

–

0

–

0

–

N.A

–

 Germany

2.4 (0.1–28.7)

3.6 (0.2–38.4)

0

0

0

0

0

0

N.A

N.A

 Greece

0.7 (0–10)

–

0

–

0

–

0

–

N.A

–

 India

23.8 (15.7–34.3)

–

0

–

0

–

0

–

N.A

–

 Indonesia

–

53.3 (43–63.4)

–

0

–

0

–

0

–

N.A

 Iraq

–

36 (24–50.1)

–

0

–

0

–

0

–

N.A

Iran

3.4 (0.9–11.7)

14.7 (9.4–22.1)

51.5

7.8

3

3

94.1

61.8

P < 0.001

P = 0.049

 Italy

21.2 (14.3–30.4)

–

–

–

0

–

0

–

N.A

–

 Japan

0.9 (0.1–12.9)

–

–

–

0

–

0

–

N.A

–

 Malaysia

14 (0.3–91.3)

2 (0.1–25.1)

8.5

0

1

0

88.3

0

P = 0.003

N.A

 Nigeria

–

1.7 (0.4–6.5)

–

0

–

0

–

0

–

N.A

 Philippines

13.8 (9.1–20.4)

–

0

–

0

–

0

–

N.A

–

 South Korea

–

0.6 (0.1–4.4)

–

0

–

0

–

0

–

N.A

 Spain

1.1 (0.4–3.1)

1.4 (0.1–19.1)

0.026

0

1

0

0

0

P = 0.872

N.A

 Sri Lanka

8.3 (2.8–21.9)

–

2.3

–

1

–

57.1

–

P = 0.127

–

 Thailand

15.4 (1.2–73.7)

4.2 (0.3–42.5)

12.7

0

2

0

84.3

0

P = 0.002

N.A

 Turkey

0.2 (0–3.8)

4.2 (1.3–12.6)

0

21.5

0

2

0

90.7

N.A

P < 0.001

 USA

9.7 (5.3–17.1)

11.4 (6.6–19.1)

0

0

0

0

0

0

N.A

N.A

Sample size, n

  ≤ 50

18.6 (8.6–35.8)

14.3 (5.9–30.8)

35.2

45.5

10

9

71.6

80.2

P < 0.001

P < 0.001

 51–100

5.8 (2.2–14.4)

67.3 (53.6–78.6)

139.2

0

11

0

92.1

0

P < 0.001

N.A

 101–200

6.7 (3.7–11.7)

6.7 (3.5–12.6)

58.6

38

8

7

86.3

81.6

P < 0.001

P < 0.001

 201–300

2.2 (0.8–6)

37.4 (31.4–43.8)

2.7

0

1

0

63.2

0

N.A

N.A

 301–400

2.8 (0.3–22.9)

0.6 (0.1–2.3)

49.4

507.8

2

0

95.9

0

P < 0.001

N.A

  > 400

5.2 (1.5–16.4)

6.4 (2.2–17.1)

305

15.3

4

1

98.7

93.5

P < 0.001

P < 0.001