PMID: 6268652Sep 1, 1981Paper

Comparison of immunosorbent electron microscopy, enzyme immunoassay and counterimmunoelectrophoresis for detection of human rotavirus in stools

Journal of Virological Methods
G ObertM H van Regenmortel


The detection of human rotaviruses by routine electron microscopy examination of stool specimens has been compared with the sensitivity of detection obtainable by three different immunoassays. These assays are: 1) immunosorbent electron microscopy (ISEM), which consists of the serological trapping of viruses on electron microscopy grids coated with protein A and specific viral antiserum; 2) an enzyme-linked immunosorbent assay (ELISA), in which the primary antibody is rabbit anti-rotavirus immunoglobulin, the secondary antibody is chicken anti-rotavirus immunoglobulin extracted from egg yolk of immunized hens, and the indicator antibody is alkaline phosphatase-conjugated rabbit anti-chicken immunoglobulin; 3) counterimmunoelectrophoresis (CIE). A total of 63 stool specimens from infants with gastroenteritis were examined. Of these, 23 and 24 specimens were found to contain rotavirus by electron microscopy and CIE, respectively. When scored by ELISA and ISEM, 37 and 39 were found to be positive, respectively. Confirmatory inhibition assays were necessary to eliminate some false positive reactions in ELISA. Detection of human rotaviruses in stools by ISEM is as sensitive as by ELISA, but in weakly positive specimens, ISEM offers ...Continue Reading


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