Plaque reduction neutralization test for measles antibodies: Description of a standardised laboratory method for use in immunogenicity studies of aerosol vaccination

摘要

Background: Clinical trials of measles vaccination administered as aerosol are planned with the aim of obtaining licensure. Measles antibody levels will be measured using the plaque reduction neutralization test (PRNT) to assess antibody responses asa surrogate marker of efficacy. Methods: A working group examined laboratory protocols for measles PRNT in use at three reference centres and agreed to a standardised procedure, which was subsequently validated. Results: Assay validation showed quantitative results varied approximately threefold both within and between assays. The lower limit of detection was approximately 20 millilnternational Units/mL.