South Australian Arbovirus and Mosquito Monitoring and Control Annual Report: 2019-2020
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SOUTH AUSTRALIAN THERE IS JUST WAY TO PROTECT ARBOVIRUS AND YOURSELF AND MOSQUITO MONITORING YOUR F AND CONTROL ANNUAL REPORT: AVOID 2019-2020 BIT Health Protection Programs Health Protection and Licensing Services 1 Contents List of Tables .................................................... 3 6. Sentinel Chicken Program ......................... 22 List of Figures ................................................... 4 Flock locations in South Australia: ..................22 Acronyms and Abbreviations......................... 5 7. Notifications of Arbovirus Infections ........ 24 1. Executive Summary .................................... 6 Ross River virus.....................................................24 Mosquito and arbovirus surveillance.............6 Exposure location ................................................25 Mosquito control and arbovirus prevention Barmah Forest virus ............................................27 campaign ................................................................6 Exotic mosquito-borne diseases .....................27 2. Introduction .................................................. 7 8. Exotic Mosquito Detections ....................... 28 3. Meteorological Data ................................... 8 9. Arbovirus Prevention Campaign Summary of weather (environmental) (Fight the Bite) ............................................. 29 conditions ...............................................................8 Communications tools/tactics ..........................29 South Australia in 2019: very dry with 10. Globe Derby Park Mosquito warm days ..............................................................8 Management Program ................................ 30 Driest year on record ..........................................8 History ......................................................................30 South Australia in spring/summer 2019-20: Northern Connector ............................................30 warm with average to above average rainfall in some areas ........................................................8 11. Local Council Mosquito Management Subsidy ......................................................... 31 4. Mosquito Trapping ...................................... 9 12. South Australian Arbovirus Coordinated Northern Adelaide mosquito surveillance ...9 Control and Operations Plan ..................... 33 South Australian River Murray mosquito Arbovirus Response Cross Agency Group surveillance ............................................................12 (ARCAG) ...................................................................33 Overview .................................................................12 ARCAG Membership ...........................................33 Alexandrina Council ............................................14 13. Future directions for mosquito surveillance Berri Barmera Council ........................................15 and control in South Australia……..……… 35 Coorong District Council ...................................16 Acknowledgement…………………………. ....................35 District Council of Loxton Waikerie.................17 Mid Murray Council .............................................18 Rural City of Murray Bridge ...............................19 Renmark Paringa Council ..................................20 5. Arbovirus Isolations from Trapped Mosquitoes (whole trap grinds) ................. 21 2 List of Tables List of Figures Table 1 Northern Adelaide mosquito Figure 1 Northern Adelaide mosquito surveillance trapping locations. ............................9 surveillance trapping locations. ............................9 Table 2 South Australian mosquito surveillance Figure 2 Total number of mosquitoes trapped at trap colour key. ..........................................................13 northern Adelaide trap sites during the 2019-20 mosquito season. ......................................................10 Table 3 Alexandrina Council mosquito The average total number of surveillance trapping locations. ............................14 Figure 3 mosquitoes trapped at northern Adelaide trap Table 4 Berri Barmera Council mosquito sites from the 2016-2017 and 2019-20 mosquito surveillance locations. .............................................15 seasons. .......................................................................10 Table 5 Coorong District Council mosquito Figure 4 Average monthly mosquito surveillance locations. .............................................16 abundance by trap location - September 2019-April 2020. ........................................................11 Table 6 District Council of Loxton Waikerie Figure 5 Mosquito surveillance trap locations in mosquito surveillance locations. ..........................17 South Australia during the 2019-20 season .....12 Table 7 Mid Murray Council mosquito Figure 6 Average monthly trapped mosquito surveillance locations. .............................................18 abundance by council area - September Table 8 Rural City of Murray Bridge mosquito 2019-April 2020. ........................................................13 surveillance locations. .............................................19 Figure 7 Alexandrina Council mosquito surveillance trapping locations. ............................14 Table 9 Renmark Paringa Council mosquito surveillance locations. .............................................20 Figure 8 Alexandrina Council mosquito abundance and species by month and Molecular detections of arbovirus in Table 10 trap location. ...............................................................14 trapped mosquitoes. ................................................21 Figure 9 Berri Barmera Council mosquito Table 11 Sentinel chicken flock locations..........23 surveillance locations. .............................................15 Table 12 MVEV and KUNV titre results in Figure 10 Berri Barmera Council mosquito Waikerie sentinel chicken flock - abundance and species by month and trap February 2020. ..........................................................23 location. ........................................................................15 Table 13 RRV infection notifications by Figure 11 Coorong District Council mosquito South Australian River Murray councils and surveillance locations. .............................................16 notifications per 100,000 population between Figure 12 Coorong District Council mosquito 1 July 2019 and 30 June 2020. .............................26 abundance and species by month and trap location. ........................................................................16 Table 14 ARCAG Member agencies and organisations. .............................................................35 Figure 13 District Council of Loxton Waikerie mosquito surveillance locations. ..........................17 Figure 14 District Council of Loxton Waikerie mosquito abundance and species by month and trap location. ...............................................................17 Figure 15 Mid Murray Council mosquito surveillance locations. .............................................18 3 Figure 16 Mid Murray Council mosquito abundance and species by month and trap location. ........................................................................18 Figure 17 Rural City of Murray Bridge mosquito surveillance locations. .............................................19 Figure 18 Rural City of Murray Bridge mosquito abundance and species by month and trap location. ........................................................................19 Figure 19 Renmark Paringa Council mosquito surveillance locations. .............................................20 Figure 20 Renmark Paringa Council mosquito abundance and species by month and trap location. ........................................................................20 Figure 21 Sentinel chicken flock locations.......22 Figure 22 Total number of RRV cases notified in South Australia, per month between 1 July 2018 and 30 June 2020. ...................................................24 Figure 23 Total number of RRV cases notified in South Australia, by age group and sex, between 1 July 2019 and 30 June 2020. .............................25 Figure 24 RRV infection notifications by South Australian River Murray council and notifications per 100,000 population between 1 July 2019 and 30 June 2020. ...................................................26 Figure 25 Total number of BFV cases notified in South Australia, per month between 1 July 2018 and 30 June 2020. ...................................................27 Figure 26 The Asian tiger mosquito, Aedes albopictus, is the exotic mosquito of greatest concern in South Australia. ....................................28 Figure 27 The aerial treatment application area (highlighted in green) adjacent to the new Northern Connector motorway. ............................30 Figure 28 Total mosquito subsidy expenditure 2009-2020*. ...............................................................32 4 Acronyms and Abbreviations ARCAG Arbovirus Response Cross Agency Group BFV Barmah Forest virus CDCB Communicable Disease Control Branch, Department for Health and Wellbeing DAWR The Commonwealth Department of Agriculture and WaterResources EVS Encephalitis Vector Survey HoR Hierarchy of Response HPO Health Protection Operations, Department for Health and Wellbeing HPP Health Protection Programs, Department for Health and Wellbeing ICPMR Institute of Clinical Pathology & Medical