Table 1.

The distribution of T. annulata prevalence based on PCR according to breed, sex, age, Tick presence and physical examinations

Category	Level	Number tested	Positive prevalence (%)	95 % confidence interval*
Breed	Holstein	80	47.5	36–59
	Sistani	80	27.5	18–39
Sex	Male	72	44.4	33–57
	Female	88	31.8	22–43
Age	Under 1	18	77.8	52–94
	Between 1 and 2	89	47.2	37–58
	Upper 2	53	7.5	2–18
Tick presence	Yes	31	51.6	33–70
	No	89	34.1	39–60
Membranes	Normal	127	35.4	27–44
	Pale	33	45.5	28–64
Lymph node	Normal	109	36.7	28–46
	Swelled	51	39.2	26–54

* Confidence interval for positive prevalence calculated based on binomial distribution