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Where n = sample size, t = value of the normal distribution (Student t) for a 95% confidence level (t = 1.96), L = accepted error or precision (5%), and SD = weighted disease prevalence (%). With This technique, the number of animals determined for random sampling was 242; collected into identifed plastic bags; and observed at microscope.Results: 194 (80.16%) positive to ticks; and 211 (79.92%) positive to fleas Ctenocephalides spp.Conclusion: Is considerable number of positives animals and to continue in the present conditions, this problem can take importance in the society, because frequently these dogs are on different points from the town and can pass the infection of other healthy animals, visitors and even the same family.

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