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1990年5月至7月,苏家屯区前谟村砖厂临时工中发生了一起以软瘫为主要症状的疾病暴发。经调查证实为低血钾软病伴低血钙。本次调查的54名工人中,最小的17岁,最大的32岁,平均在20岁左右。其中男性31名,女性23名。男性血清钾低于正常值(3.5mEq/L)的有23名,占受检者的74.19%。女性有17名,占受检者的73.91%。男性血清钙低于正常值(2.35～2.75mEq/L)的有26名,占受检人数的83.8%;女性有22名,占受检人数的95.7%。血清钾、钙未低于正常值者,其测量值亦均在正常值下限界值附近。
From May to July 1990, a disease outbreak with soft paralysis as the main symptom occurred in the temporary workers of Qianmu Village Brick Factory in Sujiatun District. Investigation confirmed that hypokalemia with hypocalcemia. The survey of 54 workers, the youngest 17 years old, the largest 32-year-old, on average about 20 years of age. 31 males and 23 females. Twenty-three men with serum potassium lower than normal (3.5 mEq / L) accounted for 74.19% of the subjects. There are 17 women, accounting for 73.91% of the subjects. Twenty-six male subjects with serum serum calcium lower than the normal range (2.35-2.75 mEq / L) accounted for 83.8% of the subjects tested, while 22 women, accounting for 95.7% of the subjects tested. Serum potassium, calcium is not lower than normal, the measured values are also in the lower limit of normal near the value.