Objective To investigate into the epidemiology of chigger and to analyze its clinical peculiarities so as ton evaluate the effects of measures against chigger problems with better knowledge through chigger perishing

mouse perishing

information publicizing and expertise training.Method Over the years from 2003 to 2008

health education and medical staff expertise lectures were given on chigger problem

and large-scale actions of chigger and mouse perishing on the campus were launched.The 30 cases of chigger problem with our hospital over the years from 1997 to 2008 were studied

and the differences on the epidemic individuals and the diagnosis time between the patients from 1997 to 2002 and the patients from 2003 to 2008 were compered.Results The number of epidemic students of our university from 2003 to 2008 has become smaller

with a reducing percentage from 73.7% to 36.4%

and early diagnosis percentage has risen from 52.6% to 90.9%.Conclusion Chigger problems can be preventied if good precautions are taken as mentioned above.Though its clinical peculiarities are complicated

we can still increase the early diagnosis percentage as long as we understand its characteristics.