Investigation on mite distribution in public area Beihai Nanning and Guilin of Guangxi Zhuang Minority Autonomous Region

  Objective   To know the basic info rmat ion of mite in public area of Beihai, Nanning and Guilin of Guang xi.

  Methods   The dust from beds, sofa, carpet and ground surface was sucked separately by a dust suction machine and collected in an sample envelope.The sample of dust was inspected under the laboratory condition.

  Results   There were 90, 162 and 92 samples collected from Beihai Nanning and Guilin.The positive rate were 74.4%, 42.0%and 23.7%, respectively.It showed a significant difference(χ²=49.11, P < 0.001).The aver age mite density(mite per gram of dust)was 153.0, 74.5 and 17.4 respectively.It also showed a signifigant difference(F=6.8453, P < 0.01).

  Conclusion   It should be pay more at tention on the inspection and mite control in the public area of cities.