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Serologic Survey of Human Hydatid Disease in High Risk Populations from Central Tunisia^*

Preliminary Results

N. Mlika, B. Larouze, M. Dridi, R. Yang, S. Gharbi, M. Jemmali, C. Gaudebout AND J. J. Rousset

Faculté de Médecine de Sousse, Tunisia
Institut de Médecine et d'Epidémiologie Tropicales/INSERM U13, Hôpital Claude Bernard, 75944 Paris Cédex 19, France
Département de Parasitologie, Faculté Paris XIII, 93000 Bobigny, France

The annual surgical incidence rate of hydatid disease in central Tunisia varies from 11.1 to 30.1 per 100,000 population depending on the district. In order to obtain more comprehensive data, we conducted a serologic survey in the district with the highest rate, using hemagglutination-inhibition to test 480 workers from a state farm and 190 inhabitants of villages in the neighborhood. The overall prevalence rate was 1.3% (9/670). Echotomography revealed liver cysts in all cases and the diagnosis was confirmed in the eight subjects who underwent surgery. If these preliminary results are confirmed by further surveys, mass screening might be considered in high risk districts.

Accepted for publication May 21, 1984.

^* Address reprint requests to: Dr. B. Larouze, Institut de Médecine et d'Epidémiologie Tropicales, Hôpital Claude Bernard, 75944 Paris Cédex 19, France