Comparison of counterimmunoelectrophoresis with indirect haemagglutination test in the detection of antibodies in rabbits experimentally infected with various species of ascarids.

Counterimmunoelectrophoresis (CIEP) and indirect haemagglutination (IHA) were used for the detection of antibodies in 437 sera of rabbits experimentally infected with Ascaris suum, Toxocara canis and Toxascaris leonina. CIEP showed 44.0-52.3% positivity in A. suum, 25.5% in T. canis and 19.7-29.2% in T. leonina infection, whereas the positivity detected by IHA was 59.8-90.2% in A. suum, 44.8% in T. canis and 59.6% in T. leonina infection. A comparison of the two tests reveals that CIEP is a suitable, rapid and simple method for orientation examinations in ascarid infections.