Comparing the effectiveness of adulticide application interventions on mitigating local transmission of dengue virus

IF 4.3 1区 农林科学 Q1 ENTOMOLOGY
Allisandra G. Kummer, André B. B. Wilke, Paulo C. Ventura, Chalmers Vasquez, Johana Medina, Isik Unlu, Yaziri Gonzalez, Adquate Mhlanga, Giovanni Benelli, Keisuke Ejima, John-Paul Mutebi, Marco Ajelli
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Abstract

The southern US has a large presence of mosquito vector species for dengue virus (DENV) and experiences thousands of DENV importations every year, which have led to several local outbreaks. Adulticide spraying targeting active mosquitoes is one of the most common insecticide strategies used as a response to an outbreak. The aim of this study is to evaluate the effectiveness of adulticide spraying conducted at different times of the day to curb DENV transmission. Based on unique dataset of Aedes aegypti diel activity patterns in Miami-Dade County, Florida, and Brownsville, Texas, we developed a mechanistic model of DENV transmission, which simulates adulticide spraying interventions. We estimated that spraying adulticide for 14 consecutive days at 7am or 8 pm was highly effective in reducing DENV outbreak probability from 10% in the absence of interventions to 0.1% for Miami-Dade County, and from 7.8 to 0.1% for Brownsville. Moreover, in case of a local outbreak in Miami-Dade County, we estimated the median number of symptomatic infections after the identification of a local outbreak to be reduced from 67.0 (IQR: 25.5–103.0) in the absence of interventions to 1.0 (IQR: 0.0–2.0) when spraying adulticide for 14 consecutive days at 8 pm. In Brownsville, the same intervention is estimated to lead to a decrease from 15.0 (IQR: 7.0–33.0) cases to 1.0 (IQR: 0.0–2.0). Our study highlights the importance of considering diel activity patterns of vector mosquito species in arbovirus preparedness and response planning and provide quantitative evidence to guide the decision-making of mosquito control authorities.

Abstract Image

比较喷洒杀成虫剂的干预措施对减轻登革热病毒在当地传播的效果
美国南部有大量登革热病毒(DENV)的蚊子病媒物种,每年都有成千上万的登革热病毒输入,导致当地爆发了数次登革热疫情。针对活跃蚊子喷洒杀成虫剂是应对疫情最常用的杀虫策略之一。本研究的目的是评估在一天中不同时间喷洒杀成虫剂对遏制 DENV 传播的效果。基于佛罗里达州迈阿密-戴德县和德克萨斯州布朗斯维尔埃及伊蚊昼夜活动模式的独特数据集,我们开发了一个 DENV 传播机理模型,该模型模拟了喷洒杀成虫剂的干预措施。我们估计,在早上 7 点或晚上 8 点连续 14 天喷洒杀成虫剂非常有效,可将迈阿密-戴德县的 DENV 爆发概率从没有干预措施时的 10% 降至 0.1%,将布朗斯维尔的 DENV 爆发概率从 7.8% 降至 0.1%。此外,在迈阿密-戴德县,如果在晚上 8 点连续 14 天喷洒杀成虫剂,在确定当地爆发疫情后,我们估计有症状感染病例的中位数将从没有干预措施时的 67.0 例(IQR:25.5-103.0)减少到 1.0 例(IQR:0.0-2.0)。在布朗斯维尔,同样的干预措施估计会导致病例从 15.0(IQR:7.0-33.0)减少到 1.0(IQR:0.0-2.0)。我们的研究强调了在制定虫媒病毒防备和应对计划时考虑病媒蚊虫的昼夜活动模式的重要性,并为蚊虫控制机构的决策提供了定量证据。
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来源期刊
Journal of Pest Science
Journal of Pest Science 生物-昆虫学
CiteScore
10.40
自引率
8.30%
发文量
114
审稿时长
6-12 weeks
期刊介绍: Journal of Pest Science publishes high-quality papers on all aspects of pest science in agriculture, horticulture (including viticulture), forestry, urban pests, and stored products research, including health and safety issues. Journal of Pest Science reports on advances in control of pests and animal vectors of diseases, the biology, ethology and ecology of pests and their antagonists, and the use of other beneficial organisms in pest control. The journal covers all noxious or damaging groups of animals, including arthropods, nematodes, molluscs, and vertebrates. Journal of Pest Science devotes special attention to emerging and innovative pest control strategies, including the side effects of such approaches on non-target organisms, for example natural enemies and pollinators, and the implementation of these strategies in integrated pest management. Journal of Pest Science also publishes papers on the management of agro- and forest ecosystems where this is relevant to pest control. Papers on important methodological developments relevant for pest control will be considered as well.
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