| validation of an attenuated live vaccine against babesiosis in native cattle in an endemic area. | the objective of this study was to evaluate in native cattle the use of an in vitro derived attenuated live vaccine (babesia bovis-babesia bigemina). three commercial farms located in a tropical region in chiapas state, mexico were included. for each ranch, 40 animals were selected as negative to babesia spp. by using an immunofluorescent antibody test (ifat) and pcr. animals were distributed in four groups with 10 animals each: (i) <9 months, (ii) 9-18, (iii) 18-36 and (iv) >36 months old. from ... | 2010 | 20537115 |