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1961年4月间,北港地区近两年来曾有哮喘症流行,原因未明。同年5月,我们工作组,进行了调查。现将调查结果报导,并对病因试作探讨。一、流行病学调查1.一般情况介绍北港是海南岛西北部的一个小岛。面积约5平方公里。岛上雨量充沛,西南为沙滩,东北为浓密树林。岛上有3个自然村(道头、上田和后溪),居民
In April 1961, there was an asthma epidemic in the northern part of Hong Kong in the past two years for reasons unknown. In May the same year, our working group conducted a survey. The survey results are now reported, and explore the cause of the trial. First, the epidemiological survey 1. General Information North Harbor is a small island in the northwest of Hainan Island. Area of about 5 square kilometers. The island is full of rainfall, southwest of the beach, northeast thick bush. The island has 3 villages (Road head, Ueda and Houxi), residents