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Table 3

Infection rates and distribution of Cryptosporidium spp. and Giardia duodenalis among cattle of different ages and with or without diarrhea.

Variable Overall infection rate (%) (no. positive/no. of samples) Infection rate (%) (n) and correlation
Cryptosporidium spp.
G. duodenalis
Infection rate (%) (n) Cryptosporidium spp. p-value OR (95% CI) Infection rate (%) (n) G. duodenalis assemblages p-value OR (95% CI)
Age (month)
 <3 17.5 (21/120) 10.0 (12) C. parvum (12) 0.011 1.00 7.5 (9) E (9) <0.001 1.00
 3–11 6.8 (11/162) 4.9 (8) C. andersoni (3), C. bovis (4), C. ryanae (1) 0.158 0.47 (0.18–1.18) 1.8 (3) E (3) 0.033 0.23 (0.06–0.88)
 12–24 4.4 (24/546) 4.0 (22) C. andersoni (22) 0.019 0.38 (0.18–0.79) 0.4 (2) E (2) <0.001 0.05 (0.01–0.22)
 >24 2.9 (17/586) 2.9 (17) C. andersoni (17) 0.001 0.27 (0.12–0.58) 0
Symptoma
 With diarrhea 27.6 (16/58) 17.2 (10) C. parvum (10) 1.00 10.3 (6) E (6) 1.00
 Without diarrhea 8.1 (5/62) 3.2 (2) C. parvum (2) 0.014 0.16 (0.03–0.76) 4.8 (3) E (3) 0.312 0.44 (0.10–1.85)
a

Only samples from <3 month-old group are included here.

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