| seroepidemiology of rickettsia typhi, spotted fever group rickettsiae, and coxiella burnetti infection in pregnant women from urban tanzania. | immunofluorescent antibody (ifa) testing was performed on sera drawn from 150 pregnant women in the port city of dar es salaam, tanzania. prevalence of antibodies to rickettsia typhi was 28%, higher than in any of the 12 other african countries in which serosurveys using ifa testing have been performed. seroprevalence of antibodies to spotted fever group rickettsiae antigens was 25.3%, comparable with that found in other sub-saharan countries endemic for amblyomma ticks. only 4.7% of women were ... | 1997 | 9288814 |
| identification of babesia bovis and cowdria ruminantium on the island of unguja, zanzibar. | babesia bovis and cowdria ruminantium were identified for the first time in cattle on unguja island, zanzibar. b bovis is common and widespread, although clinical disease had not been diagnosed previously. the vector of heartwater, amblyomma variegatum, is found throughout unguja but c ruminantium appears to be more localised in distribution than b bovis. | 1990 | 2301128 |