| serological studies of babesiosis and anaplasmosis of cattle. | bos indicus-crossbred calves exposed to natural babesia bovis infection in wet and dry tropical environments in northern queensland were tested for antibodies using the indirect haemagglutination (iha) test. there was evidence of maternal antibodies suggesting endemicity of b. bovis in the 2 environments. within one year 35.3 to 94.6% of the calves had acquired b. bovis infection. the highest titres and most rapid conversion rates were observed just after the wet season when the tick population ... | 1982 | 7181776 |