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[Lung cancer: recent epidemiologic data].

The prognosis of lung cancer is still very poor. However, during the last few years a favorable trend has been observed, consisting in the stabilization and even the decrease of incidence rate in Western countries. Besides, the sex-ratio shows a divergent trend, increasing in France and decreasing in the United States where lung cancer nowadays is the first cause of cancer deaths in women. The major risk factor, tobacco smoke, is now well established, qualitatively as well as quantitatively. Other air contaminants, occupational factors and air pollutants, have a lesser responsibility. The intervention of nutritional or genetic factors could explain why smokers are not equally susceptible to tobacco smoke. Screening for lung cancer is, and will be, reconsidered in the light of the results of prospective studies initiated 10 years ago under the auspices of the American Cancer Society.

Adult↗

[Epidemiologic data on distomiasis due to Fasciola gigantica Cobbold on the island of Madagascar. Infestation of cattle between 1975 and 1981].

Stools examinations of zebus were made in Madagascar between 1975 and 1981 for determining the importance of Fascioliasis gigantica in the six provinces of the island during this time. High percentages of F. gigantica eggs were found in the stools of the different infected zebus-herds of five provinces. No fasciolid infection was noted in 1979 in the cattle of the province of Diego-Suarez. Differences were noted between the infection rate obtained by fecal examination and the rate indicated in the veterinary reports. The significance of these results is discussed.

Animals↗