| distribution of neutralizing antibodies to california and bunyamwera serogroup viruses in horses and rodents in california. | neutralization tests were done on sera from 141 horses from high elevation regions of california. antibody prevalences to jamestown canyon, snowshoe hare, and california encephalitis viruses in the california serogroup and northway virus in the bunyamwera serogroup were 55%, 43%, 18%, and 46%, respectively. in 51 horses from rural low elevation regions, seroprevalences were 31%, 35%, 35%, and 37%, respectively. twenty-four horses from a suburban lowland area were seronegative, except for a singl ... | 1990 | 2107770 |