Abstract
It will be done the comparative test of the potency of six cattle and swine vaccines sold in Brazil, adopting the American protocol 9 CFR 113-101 - Leptospira Pomona - 2008. Vaccines will be diluted to 1:800 in the dose recommended for cattle and swine by the manufacturer. The individual dose of vaccine will be applied in hamsters 0.25 mL subcutaneously. The challenges will be made after …