| bovine anaplasmosis prevalence in northern veracruz state, mexico. | in order to learn more about the presence of bovine anaplasmosis in northern veracruz state, méxico, paired blood and serum samples from 368 cattle were subjected to polymerase chain reaction (pcr) and complement-fixation test (cft). the overall prevalence of anaplasma marginale by pcr was 69.2% and seroprevalence by cft 54.6%. age-specific prevalence was calculated for each test. sixty-eight percent of animals from 0 to 3 months of age already were infected (pcr-positive), compared to only 42.4 ... | 1997 | 9443325 |
| bovine babesiosis and anaplasmosis follow-up on cattle relocated in an endemic area for hemoparasitic diseases. | a multiplex pcr/dna probe assay was used to monitor babesia bovis, b. bigemina and anaplasma marginale infection in cattle introduced to a boophilus microplus-infested area in veracruz, mexico. eight intact, 18-month-old, cross-bred beef cattle (four naive, group a; four babesia species--premunized, group b) were immediately exposed to ticks after arrival and were clinically monitored from day 6 to day 98 post-exposure (pe) to ticks. blood sample analysis for dna detection by the mpcr/dna probe ... | 1998 | 9668444 |