Head Louse Infestation among the Students in tsngyang-gun, Kysngsangbuk-to

경상북도 영양군 학생들의 머릿이 감염 상황

The purpose of this study is to know the present situation of head louse infestation among the students in Ysngyang-gun, Kyongsangbuk-to. From May 11 to June 20, 1984, a total of 5,937 students in 23 primary and 3 middle schools were examined to identify the adult worms of head louse andlor their nits on the hair. The results are as follows: 1, The overall infestation rate was 44.5% and the rates ranged from 19.6% to 88.6%A by each school. 2. In primary schools, the rate was 53.0%A and in middle schools, 27. 1%. 3. The school boys'rate was 33.2% and the school girls'55.6%, and the difference was statistically significant (P<0.001) . 4. The rates were different by grades in middle schools. 5. The rates were different by areas (Myons) (p<0.001) . 6. The adult worms collected from the students were Pediculus humanus roar. capitis.