Investigation on mosquito infestations in the schools of Changning District in summer

XIA Yi; LIU Hong-xia; TANG Hong; LI Ying; YIN Wei-shen; CAI En-mao

Abstract：Objective To investigate the mosquito infestations in different schools in Changning,and provide a scientific basis for the mosquito control of school.Methods Two universities,five nurseries,five primary and secondary schools were randomly selected in Changning District for the investigation.The mosquito infestations in the nurseries and schools in June and August were evaluated by investigation on mosquito breeding sites and human-baited trapping.Results The positive rate of breeding sites in June was higher than in August(11.11％ vs 7.14％).The highest positive rate of mosquito breeding sites was in the universities (11.23％),followed by the nurseries (9.49％).The primary and secondary schools held the lowest (7.11％);The density of adult mosquitoes in June was higher than in August.At the time of 16:30-17:00,most of the mosquitoes captured were Aedes albopictus accounting for 94.44％;while at the time of 19:00-19:30,most of the captured mosquitoes were Culex pipiens pallens accounting for 77.30％.Conclusion The indices of mosquito infestation and numbers of mosquito breeding sites of school in Changning were significantly higher than the local standards.It is recommended that education departments should increase the efforts to improve the campus environment,eliminate mosquito breeding sites and reduce mosquito density.