arbovirus and mosquito surveillance workshop: december 2015 john macdonald incursion experience...
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Department of Agriculture & Water Resources 3 Vector Monitoring at First Ports of Entry 78 First Ports of Entry (air and sea ports) Conducted on behalf of Aust Government Dept. of Health (MoU) WHO International Health Regulations (IHR) 2005 (Annex 5, Paragraph 4) 400m precinct Routine adult, larval and ovi trapping and dipping Level of vector monitoring based on vector risk of the portTRANSCRIPT
Arbovirus and Mosquito Surveillance Workshop: December 2015
John MacDonald
Incursion Experience Exotic Mosquito Threats
3 December 2015
Department of Agriculture & Water Resources 2
Managing the risk of Exotic Mosquitoes
Department of Agriculture and Water Resources plays an active role in mitigating the introduction of exotic mosquitoes. • Disinsection of aircraft cabins and holds• Inspections of international vessels• Import conditions and treatments for risk cargoes• Surveillance of cargo not subject to mandatory inspections• Vector Monitoring at First Ports of Entry
Department of Agriculture & Water Resources 3
Vector Monitoring at First Ports of Entry
• 78 First Ports of Entry (air and sea ports)• Conducted on behalf of Aust Government Dept. of Health (MoU) • WHO International Health Regulations (IHR) 2005
(Annex 5, Paragraph 4)• 400m precinct • Routine adult, larval and ovi trapping and dipping • Level of vector monitoring based on vector risk of the port
Department of Agriculture & Water Resources 4
Exotic Detections at the Border• Isolated detections of exotic mosquitoes at the border are not
uncommon • Average about 6 detections per year
• Primarily occur at seaports in Northern Australia
Year Number of Detections
Species Locations
2009 3 Ae. aegypti x 2Ae. albopictus x 1
Darwin, Townsville, Port Kembla
2010 8 Ae. aegypti x4Ae. albopictus x 4
Darwin x 5, Townsville, Horn Island, Port Hedland
2011 5 Ae. aegypti x 1Ae. albopictus x 4
Darwin x 2, Cairns x 2, Thursday Island
2012 6 Ae. aegypti x 2Ae. albopictus x 4
Townsville x 3, Darwin, Melbourne, Brisbane (Airport detection)
2013 9 Ae. aegypti x 4Ae. albopictus x 5
Darwin x 6, Cairns, Townsville, Perth
Note: Table includes imported cargo detections and detections through vector monitoring and surveillance at international ports.
Department of Agriculture & Water Resources 5
Increase in Border Detections – Particularly at International Airports
Year Port Type Number of Detections
Species Locations
2014 Airport 21 Ae. aegypti x 19Ae. albopictus x 1Cx. gelidus x 1
Perth x 17, Adelaide x 2, Melbourne x 2
2014 Seaport 3 Ae. aegypti x2Ae. albopictus x 1
Darwin, Brisbane, Perth
2015 Airport 26 Ae. aegypti x 25Ae. albopictus x 1
Perth x 12, Brisbane x 6, Melbourne x 5, Darwin x 3
2015 Seaport 4 Ae. aegypti x 1Ae. albopictus x 3
Darwin x 2, Cairns, Perth
• Averaging 27 detections per year.
Department of Agriculture & Water Resources 6
Recent Exotic Mosquito Detections at International Airports
Identification/ Notification
Date
Port Species Number of specimens detected
30 Nov 2015 Perth (Airport) Aedes aegypti 1 (adult) (female)
29 Nov 2015 Perth (Airport) Aedes aegypti 1 (adult) (female)
23 Nov 2015 Melbourne (Airport) (fire station)
Aedes aegypti 1 (adult) (male)
17 Nov 2015 Perth (Airport) Aedes aegypti 37 (adult (female) x 1, Larvae x 26, Pupae x 10)
11 Nov 2015 Brisbane (Airport) (air cargo facility)
Aedes aegypti 1 (adult) (male)
11 Nov 2015 Melbourne (Airport) (air cargo facility)
Aedes albopictus 1 (adult) (female)
6 Oct 2015 Darwin (airport) Aedes aegypti 2 (larvae)
Department of Agriculture & Water Resources 7
• Adult knockdown fogging
• Residual surface / harbourage treatments
• Treatments of standing water, drains, receptacles, other mosquito breeding sites
• Ground surveys / source reduction
• Enhanced vector surveillance / trapping
• Treatment of infested imported goods
Emergency Response Activities
Department of Agriculture & Water Resources 8
• Introduction of additional on-arrival aircraft hold treatment measures
• Enhanced surveillance at Australian international airports
• Enzyme-linked immunosorbent assay (ELISA) testing of arriving aircraft to verify
disinsection requirements
• DNA analysis of mosquitoes to identify origin
Enhanced Risk Mitigation Measures
Image courtesy of Dr. Nigel Beebe, University of Queensland
Department of Agriculture & Water Resources 9
• Source and pathway investigations continuing
• Identifying the origin of the mosquitoes will aid in more targeted risk mitigation
• Factors that may have contributed to the increase in detections include:
o Changes in mosquito populations, the environment and/or vector control activities at
port of origin
o Ineffective aircraft disinsection treatments by the airlines
o Insecticide resistance of the mosquitoes
Why the sudden increase in detections at international airports
www.bwmag.inwww.dailytelegraph.com.au
Department of Agriculture & Water Resources 10
• National Vector Monitoring Review (completion Sept 2015)
• Policy review for vector monitoring at the border
• Documented national response strategy
• Spatial DNA database
• Provisions under the new Biosecurity Legislation
Future Initiatives
www.biolawnexperts.com
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Questions?
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John MacdonaldSenior Entomology Department of Agriculture & Water ResourcesPO Box 657, Mascot NSW [email protected]