From 1992 to 1995, a previous epidemic area and a non-epidemic area both in Guangzhou Haizhu district and Haikang city were selected as the DF surveillance points.
1995年，在广州市珠海区和海康市各选择1个既往登革热（简称DF）流行区和非流行区作为DF监测点，并对省内临床疑似DF病人进行监测。
In the non-defluoride group the mean of activity of urine creatine phosphokinase(CPK) was much higher than that in defluoride group ( P< 0.01) and non - epidemic area group (P<0.01) .
血清肌酸磷酸激酶（CPK）活性均值病区组非常明显地高于改水病区组（P<0.01）和非病区组（P<0.01）。
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