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Clinical and Diagnostic Laboratory Immunology, May 2003, p. 481-482, Vol. 10, No. 3
1071-412X/03/$08.00+0 DOI: 10.1128/CDLI.10.3.481-482.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Focus Technologies, Cypress, California,1 Quest Diagnostics, San Juan Capistrano, California2
Received 23 December 2002/ Returned for modification 13 February 2003/ Accepted 4 March 2003
Complement fixation (CF) was compared to hemagglutination inhibition (HI) as a method for identifying antibody responses to influenza virus vaccination. CF assays were performed at two different laboratories using paired (pre- and postvaccination) sera from 38 vaccinated laboratory employees; HI assays were performed at a third laboratory. As expected, most vaccinees (31/38 = 82%) responded to at least one of three influenza virus antigens as measured by HI. In contrast, only 21% (8/38) of vaccinees showed a response by CF at laboratory 1, and only 29% (11/38) showed a response by CF at laboratory 2. These findings indicate that due to low sensitivity, CF assays should not be used to assess the antibody response to influenza virus vaccination.
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