Cross-Neutralization Study of Seven California Group (Bunyaviridae) Strains in Homoiothermous (PS) and Poikilothermous (XTC-2) Vertebrate Cells

Abstract

SUMMARY Antigenic relationships among seven California group strains were studied by a plaque-reduction neutralization test (PRNT). Cross-reactions occurred in most cases but three subgroups were noted: (1) the major serogroup contained the viruses of California encephalitis, LaCrosse, Snowshoe Hare and Ṫrahyňa (including the Lumbo strain) whereas (2) Jamestown Canyon and (3) Trivittatus viruses were distinct. There was no significant difference between the PRNT results in mammalian (PS) cells incubated at 37 °C and amphibian (XTC-2) cells incubated at 28 °C. Trivittatus virus failed to produce plaques in XTC-2 cells.