| coxiella burnetii antibody prevalences among human populations in north-east africa determined by enzyme immunoassay. | retrospective serosurveys were conducted to determine the prevalence of antibody to phase-i coxiella burnetii among humans in various locations of north-east africa. sera were tested by the enzyme immunoassay (eia). initially the eia was compared with the standard indirect fluorescent antibody (ifa) method for the detection of antibody to c. burnetii. results indicated that the eia was slightly less sensitive (88%), but highly specific (94%) and less subjective than the ifa technique. eia was su ... | 1995 | 7783275 |