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Table 1 Cryptosporidium prevalence in veal herds found in Brittany farms according to animal age.

From: Cryptosporidium infection in a veal calf cohort in France: molecular characterization of species in a longitudinal study

  Animal age  
Farm 5 weeks
No. positive/No. sample (%)
15 weeks
No. positive/No. sample (%)
22 weeks
No. positive/No. sample (%)
Total number of positive animals* (%)
CA1 1/6 (16.6%) 2/6 (33.3%) 1/6 (16.6%) 4/6 (66.6%)
CA2 3/10 (30%) 4/10 (40%) 3/10 (30%) 8/10 (80%)
CA3 4/10 (40%) 6/10 (60%) 0/10 (0%) 6/10 (60%)
MO1 0/10 (0%) 0/10 (0%) 1/10 (10%) 1/10 (10%)
IV1 6/10 (60%) 7/10 (70%) 1/10 (10%) 10/10 (100%)
IV2 4/10 (40%) 4/10 (40%) 3/10 (30%) 6/10 (60%)
IV3 2/8 (25%) 7/8 (87.5%) 3/8 (37.5%) 8/8 (100%)
IV4 3/10 (30%) 4/10 (40%) 0/10 (0%) 6/10 (60%)
IV5 4/10 (40%) 2/10 (20%) 3/10 (30%) 5/10 (50%)
MA1 8/10 (80%) 3/10 (30%) 1/10 (10%) 9/10 (90%)
MA2 7/10 (70%) 3/10 (30%) 1/10 (10%) 7/10 (70%)
MA3 6/10 (60%) 6/9** (66.6%) 0/9** (0%) 8/10 (80%)
MA4 6/10 (60%) 4/9** (44.4%) 1/9** (11.1%) 6/10 (60%)
MA5 7/8 (87.5%) 6/8 (75%) 0/8 (0%) 8/8 (100%)
MA6 7/10 (70%) 3/10 (30%) 2/10 (20%) 8/10 (80%)
Total 68/142
(47.9%)
59/140
(42.1%)
20/140
(14.3%)
100/142
(70.4%)
  1. * A calf is considered to be positive if at least one out of the three samples is positive.
  2. **The number of animals is 9 because one calf died between the age of 5 and 15 weeks.