| changes in rift valley fever neutralizing antibody prevalence among small domestic ruminants following the 1987 outbreak in the senegal river basin. | following the rift valley fever (rvf) epizootic of 1987 in the senegal river basin, 2 series of serosurveys were carried out. in 1988 and 1989, respectively, 303 and 331 randomly selected sheep and goats were investigated and sera tested for the presence of specific rvf-virus-neutralizing antibodies. in 1988, 24.4% of the sera was found to have anti-rvf neutralizing antibodies and in 1989, 19.3% was found. in 1988, we observed in the dagana district, including the 1987 epizootic area, a signific ... | 1991 | 2052753 |