Studies of feline babesiosis 3. Haematological findings.

Haematological changes were monitored in 20 experimentally infected and 70 clinical cases of feline babesiosis. There was a rapid drop in the haematocrit, haemoglobin and erythrocyte count. Experimental animals were most anaemic about 3 weeks after infection. Variations were encountered. There were no definite trends in the erythrocyte indices although the erythrocytes were often macrocytic and hypochromic. No significant changes were found in total leukocyte counts.