| [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 |