Table 4 Risk factors analysis on the prevalence of Cryptosporidium, G. duodenalis and Blastocystis in dogs.

From: Occurrence and genotypes of Cryptosporidium spp., Giardia duodenalis, and Blastocystis sp. in household, shelter, breeding, and pet market dogs in Guangzhou, southern China

Factor

Category

No. tested

No. of positive (positive rate %; CI95)

Co-infection

p

G. duodenalis

Cryptosporidium

Blastocystis

Origin

Shelters

149

13 (8.7; 7.0–10.4)

12 (8.1; 6.4–9.8)

35 (23.5; 21.4–25.6)

60 (40.2; 3.9–42.5)

< 0.001

Households

199

2 (1.0; 0.2–1.8)

4 (2.0; 1.0–3.0)

0

6 (3.0; 1.9–4.1)

 

Pet market

66

5 (7.5; 2.2–7.8)

0

0

5 (7.5; 2.2–7.8)

 

Breeding centers

237

0

5 (2.1; 1.2–3.0)

0

5 (2.1; 1.2–3.0)

 

Age

≤ 6 month

345

14 (4.1; 3.3–4.9)

13 (3.8; 3.0–4.6)

13 (3.8; 3.0–4.6)

40 (11.6; 10.6–12.6)

0.946

> 6 month

306

6 (2.0; 1.3–2.7)

8 (2.6; 1.8–3.4)

22 (7.2; 6.2–8.2)

36 (11.8; 10.7–12.9)

 

Sex

Male

361

7 (1.9; 1.3–2.5)

12 (3.3; 2.6–4.0)

14 (3.9; 3.2–4.6)

33 (9.1; 8.2–10.0)

0.025

Female

290

13 (4.5; 3.6–5.4)

9 (3.1; 2.3–3.9)

21 (7.2; 6.2–8.2)

43 (14.8; 13.6–16.0)

 

Deworming

Yes

436

5 (1.1; 0.6–1.6)

7 (1.6, 1.1–2.1)

0

12 (2.8; 12.0–13.6)

< 0.001

No

215

15 (7.0, 5.7–8.3 )

14 (6.5%; 5.3–7.7)

35 (16.3; 14.8–17.8)

64 (30.0; 28.3–31.7)

 

Total

 

651

20 (3.1; 2.6–3.6)

21 (3.2; 2.7–3.7)

35 (5.4; 4.9–5.9)

76 (11.7; 11.1–12.3)