Spatial Distribution and Long-Term Persistence of Wolbachia -Infected Aedes aegypti in the Mentari Court, Malaysia

Dengue is endemic in Malaysia, and vector control strategies are vital to reduce dengue transmission. The strain AlbB carried by both sexes of was released in Mentari Court, a high-rise residential site, in October 2017 and stopped after 20 weeks. frequencies are still being monitored at multiple tr...

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Bibliographic Details
Published in:Insects (Basel, Switzerland) Switzerland), 2023-04, Vol.14 (4), p.373
Main Authors: Cheong, Yoon Ling, Nazni, Wasi A, Lee, Han Lim, NoorAfizah, Ahmad, MohdKhairuddin, Ibrahim C, Kamarul, Ghazali M R, Nizam, Nasir M N, Arif, Mohd A K, NurZatilAqmar, Zabari M, Irwan, Saidin M, Khadijah, Khairuddin, Paid, Yusof M, Topek, Omar, Hasnor, Asim H, AbuBakar, Rahman, Singh Gill, Balvinder, Fadzilah, Kamaludin, Tahir, Aris, Sinkins, Steven P, Hoffmann, Ary A
Format: Article
Language:English
Subjects:
Ae. aegypti
Aedes aegypti
Aquatic insects
Bacteria
Binomial distribution
Contingency
Culicidae
Dengue fever
Disease transmission
Flooring
Generalized linear models
High rise buildings
Insecticides
Interpolation
invasion
Mosquitoes
ovitrap index
Parks & recreation areas
Residential areas
Spatial distribution
spatial interpolation
Statistical analysis
Temporal distribution
Vector-borne diseases
Viruses
Wolbachia
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Summary:Dengue is endemic in Malaysia, and vector control strategies are vital to reduce dengue transmission. The strain AlbB carried by both sexes of was released in Mentari Court, a high-rise residential site, in October 2017 and stopped after 20 weeks. frequencies are still being monitored at multiple traps across this site, providing an opportunity to examine the spatiotemporal distribution of and mosquito density with respect to year, residential block, and floor, using spatial interpolation in ArcGIS, GLMs, and contingency analyses. In just 12 weeks, -infected mosquitoes were established right across the Mentari Court site with an overall infection frequency of >90%. To date, the frequency of has remained high in all areas across the site despite releases finishing four years ago. Nevertheless, the invaded more rapidly in some residential blocks than others, and also showed a relatively higher frequency on the eighth floor. The index tended to differ somewhat between residential blocks, whilst the index was relatively higher at the top and bottom floors of buildings. In Mentari Court, only a short release period was required to infiltrate completely and stably into the natural population. The results inform future releases in comparable sites in a dengue control programme.
ISSN:2075-4450
2075-4450
DOI:10.3390/insects14040373