Chua K B, Chua I L, Chua I E, Chua K H
International Medical University, Sesama Centre, Plaza Komanwel, 57000 Bukit Jalil, Kuala Lumpur, Malaysia.
Singapore Med J. 2005 Nov;46(11):639-44.
Dengue and dengue haemorrhagic fever are common and serious arboviral diseases endemic in a number of countries situated in both the tropical and subtropical belts.
A prospective study was carried out to examine the environmental factors influencing the ovipositing behaviour of gravid female Aedes mosquitoes in a typical urbanised residential environment in Malaysia. This study reports the effect of the usual ultra-low volume fogging of insecticides carried out by public health officers on the collection of immature Aedes mosquitoes using ovitraps.
Throughout the study, no dead immature Aedes mosquitoes was noted in any of the ovitraps set up in all of the fogging and immediate post-fogging periods. The mean number of days of ovitrapping for immediate pre-fogging, fogging and post-fogging periods were 10.3, 10.1 and 10.4 days, respectively. There was no statistically significant difference in the mean duration of ovitrapping cycle among the immediate pre-fogging, fogging and immediate post-fogging periods. The total number of immature Aedes mosquitoes collected in the immediate post-fogging periods was more than the immediate pre-fogging periods, and both were more than the fogging periods. However, there was no statistically significant difference in the total number of immature Aedes mosquitoes collected at various periods. It was not unusual to find dead insects, spiders and even small animals collected in ovitraps or environment in the fogged locality within 48 hours of chemical fogging.
In this study, the usual chemical fogging in natural environment was ineffective in breaking the reproductive lifecycle by eliminating gravid female Aedes mosquitoes.
登革热和登革出血热是常见且严重的虫媒病毒疾病，在热带和亚热带地区的许多国家呈地方性流行。
开展了一项前瞻性研究，以调查影响马来西亚典型城市化居住环境中妊娠雌性伊蚊产卵行为的环境因素。本研究报告了公共卫生官员通常进行的超低容量杀虫剂喷雾对使用诱蚊产卵器收集未成熟伊蚊的影响。
在整个研究过程中，在所有喷雾期间和喷雾后立即设置的诱蚊产卵器中均未发现死亡的未成熟伊蚊。喷雾前、喷雾期间和喷雾后立即诱蚊产卵的平均天数分别为10.3天、10.1天和10.4天。喷雾前、喷雾期间和喷雾后立即诱蚊产卵周期的平均持续时间在统计学上无显著差异。喷雾后立即收集的未成熟伊蚊总数多于喷雾前，且两者均多于喷雾期间。然而，不同时期收集的未成熟伊蚊总数在统计学上无显著差异。在化学喷雾后48小时内，在喷雾地点的诱蚊产卵器或环境中发现死亡昆虫、蜘蛛甚至小动物并不罕见。
在本研究中，自然环境中通常的化学喷雾在通过消灭妊娠雌性伊蚊来打破繁殖生命周期方面无效。
