Detection of swine caliciviruses by indirect immunofluorescence.

The indirect immunofluorescence test is a rapid method for detecting the presence of vesicular exanthema of swine virus or San Miguel sea lion virus in cell culture. A serological relationship exists between vesicular exanthema of swine virus and San Miguel sea lion virus, as shown by the fluorescence-positive reactions between swine antisera to vesicular exanthema of swine virus A48 and San Miguel sea lion virus type 5 and cell cultures infected with San Miguel sea lion virus types 1, 2, 3, 4 and 5 as well as vesicular exanthema of swine virus B51, C52, D53, E54, F55, G55, H55, I55, J56 and K55. The indirect immunofluorescence test detects group-specific antibody to caliciviruses in swine sera.