Abstract: | Prevalence analysis in the Gard; fluctuations according to seasons, age and sex. Statement a excystation method after passage in a induction solution; observations and excystation rate. Cysts resistance study in exterior middle at various temperature: at dry from -5 degrees C to 40 degrees C, in fresh water from -5 degrees C to 20 degrees C and in sea water at 10 degrees and 20 degrees C. Epidemiologic consequences. |