| [serologic studies on the occurrence of bovine ehrlichiosis in the cantons zürich, schaffhausen, thurgau, st. gallen and obwalden]. | the purpose of this study was to investigate the geographical distribution of bovine ehrlichiosis in the cantons zürich, schaffhausen, thurgau, st. gallen and obwalden. to this end, an indirect immunofluorescence assay was established. the diagnostic sensitivity and specificity was estimated to be close to 100% based on the results obtained with several reference sera from the us national veterinary services laboratories and the seroconversion panels of 20 heifers and cows. blood samples from 25 ... | 1997 | 9451917 |
| [the transmission of tick-borne encephalitis in switzerland. an attempt at establishing a register of natural reservoirs for a seroepidemiologic examination of forest personnel in the middle of the country]. | the aim of this investigation was to localize natural foci of tickborne encephalitis (tbe) in switzerland by means of two approaches. (1) sera of foresters, who are particularly exposed to tbe, were examined, restricting serum collection to the plateau between the lake of constance and the lake of geneva. (2) virus isolations were performed on 8600 ticks (ixodes ricinus) collected all over the country. in four regions natural foci of varying size were detected: (1) in the northern parts of the c ... | 1981 | 7280635 |