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最近十年,全世界伤寒发病率不高。据资料记载,目前每年登记的伤寒与副伤寒病例约35万例。拉美国家最多,发病率是欧洲的2倍,亚洲和非洲少一些,而欧洲发病率又是美国和加拿大的10倍。1976年拉美居民的平均混悬发病率为13.8/10万,个别国家发病率波动于0.7(委内瑞拉)至70.5(智利)。在一些国家(秘鲁、多米尼加、厄瓜多尔、萨尔瓦多、洪都拉斯、哥伦比亚)一直保持在每10万居民中几十个病例的
In the recent decade, the incidence of typhoid fever in the world is not high. According to the information recorded, about 350,000 cases of typhoid and paratyphosis are currently registered each year. The largest number of Latin American countries, the incidence rate is 2 times in Europe, Asia and Africa less, and the incidence of Europe and the United States and Canada are 10 times. The average incidence of malaria among Latin American residents in 1976 was 13.8 per 100 000 and the incidence of individual countries fluctuated between 0.7 (Venezuela) and 70.5 (Chile). In some countries (Peru, Dominica, Ecuador, El Salvador, Honduras, Colombia) dozens of cases per 100,000 inhabitants