Abstract
Immune-adherence haemagglutination (IAHA); single radial haemolysis and enzyme immunoassay (ELISA) versus haemagglutination inhibition (HAI) for detecting antibodies to measles virus were evaluated. The rank correlation computed according to Spearman for the sera of healthy individuals gave values of 0.66, 0.73, 0.72, respectively, for HAI-IAHA, HAI-single radial haemolysis (SRH) and HAI-ELISA. High percentages of accordance were observed as regards sera from both healthy and vaccinated individuals. In the case of vaccinated individuals the discordance analysis showed significant differences between HAI and IAHA, HAI and SRH, SRH and ELISA. The discordances indicate higher sensitivity of HAI and ELISA for the detection of seroconversion.
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