The influence of environmental temperature and relative air humidity on the development of ticks Ixodes ricinus and their infection rate with tick-borne encephalitis virus was studied. It was found that the temperature influenced significantly the development of ticks, but it did not influence their infection rate. To the contrary, the relative air humidity influenced the infection rate. It is assumed that the intrinsic factors play a primary role in the infection of ticks, while extrinsic factors have a secondary role; they are probably important at border values only.

Institute of Hygiene and Epidemiology Prague Czechoslovakia

History of Arbovirus Research in the Czech Republic

Increased Relative Risk of Tick-Borne Encephalitis in Warmer Weather

Correlation between meteorological factors and tick-borne encephalitis incidence in the Czech Republic