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Mosquito-Borne Diseases in Queensland Annual Report 1 July Mosquito Borne Diseases in Queensland 1 July 2012 – 30 June 2017 Communicable Diseases Branch Mosquito-borne diseases in Queensland, 1 July 2012 – 30 June 2017 Published by the State of Queensland (Queensland Health), May 2018 This document is licensed under a Creative Commons Attribution 3.0 Australia licence. To view a copy of this licence, visit creativecommons.org/licenses/by/3.0/au © State of Queensland (Queensland Health) 2018 You are free to copy, communicate and adapt the work, as long as you attribute the State of Queensland (Queensland Health). For more information contact: Communicable Diseases Branch, Department of Health, GPO Box 48, Brisbane QLD 4001, email [email protected], phone 07 3328 9728. An electronic version of this document is available at https://www.health.qld.gov.au/clinical-practice/guidelines-procedures/diseases- infection/surveillance/reports/mosquito-borne Disclaimer: The content presented in this publication is distributed by the Queensland Government as an information source only. The State of Queensland makes no statements, representations or warranties about the accuracy, completeness or reliability of any information contained in this publication. The State of Queensland disclaims all responsibility and all liability (including without limitation for liability in negligence) for all expenses, losses, damages and costs you might incur as a result of the information being inaccurate or incomplete in any way, and for any reason reliance was placed on such information. Mosquito Borne Diseases in Queensland , 1 July 2012 to 30 June 2017 - ii - Contents Summary ............................................................................................................. v Introduction......................................................................................................... 6 Methods ............................................................................................................. 6 Results ............................................................................................................... 7 1. Ross River virus infection ........................................................................... 8 2. Barmah Forest virus infection ................................................................... 10 3. Dengue ..................................................................................................... 13 3.1 Locally acquired dengue .................................................................. 14 3.2 Overseas acquired dengue .............................................................. 16 4. Chikungunya............................................................................................. 21 5. Malaria...................................................................................................... 21 6. Zika virus infection .................................................................................... 22 7. Japanese encephalitis virus infection ........................................................ 24 8. Murray Valley encephalitis virus infection ................................................. 24 9. West Nile virus (Kunjin subtype) infection ................................................. 25 10. Yellow fever .............................................................................................. 25 11. Other alphavirus and flavivirus infections .................................................. 25 Conclusion:....................................................................................................... 25 References ....................................................................................................... 27 Figures Figure 1 : Notifications of RRv infection in Queensland, 1 July 2012 to 30 June 2017, by year and month of onset........................................................................................... 8 Figure 2: Average annual notification rates of RRv per 100,000 population per year by Local Government Area, Queensland, 01 July 2012 – 30 June 2017 .......................... 10 Figure 3: Notifications of BFv infection in Queensland, 1 July 2012 to 30 June 2017, by year and month of onset ............................................................................................. 11 Figure 4: Average annual notification rates of BFv per 100,000 population per year by Local Government Area, Queensland, 01 July 2012 – 30 June 2017 .......................... 13 Figure 5: Notifications of dengue in Queensland with onset from 1 July 2012 to 30 June 2017, by month, year and place of acquisition ............................................................ 14 Figure 6: Notifications of locally acquired dengue 1 July 2012 to 30 June 2017, by sex and age group............................................................................................................. 16 Figure 7: Number of overseas acquired dengue notifications by HHS area, Queensland, 01 July 2012 – 30 June 2017 ................................................................. 17 Mosquito Borne Diseases in Queensland , 1 July 2012 to 30 June 2017 - iii - Tables Table 1: Notifications of mosquito-borne diseases in Queensland, 1 July 2012 to 30 June 2017 by financial year. ......................................................................................... 7 Table 2: Rates of notified RRv infection (per 100,000 population per year) by HHS of usual residence and financial year, 1 July 2012 to 30 June 2017 .................................. 8 Table 3: Rates of notified BFv infection (per 100,000 population per year) by HHS of usual residence and financial year, 1 July 2012 to 30 June 2017 ................................ 12 Table 4: Notifications of dengue in Queensland, 1 July 2012 to 30 June 2017, by local or overseas acquisition (changes made to table) ........................................................ 14 Table 5: Summary of dengue outbreaks in Queensland by LGA and serotype, 1 July 2012 to 30 June 2017 ................................................................................................. 15 Table 6: Number of notifications of overseas acquired dengue in Queensland, by region and country of acquisition and year, 1 July 2012 to 30 June 2017.................... 18 Table 7: Notifications of overseas acquired dengue in Queensland, 1 July 2012 to 30 June 2017 by region and country of acquisition and serotype ..................................... 20 Table 8: Notifications of chikungunya in Queensland, 1 July 2012 to 30 June 2017, by country of acquisition .................................................................................................. 21 Table 9: Notifications of malaria in Queensland, by Plasmodium species and region and country of acquisition, 1 July 2012 to 30 June 2017 ............................................. 22 Table 10: Notifications of Zika virus infection in Queensland by country of acquisition and year of onset, 1 Jan 2014 to 30 June 2017. ......................................................... 24 Table 11: Line list of Japanese encephalitis virus infection notifications in Queensland by onset date, country of acquisition and validity, 1 July 2012 to 30 June 2017 .......... 24 Table 12: Notifications of other alphavirus and flavivirus infections in Queensland, by organism and region of origin, 1 July 2012 to 30 June 2017 ....................................... 25 Mosquito Borne Diseases in Queensland , 1 July 2012 to 30 June 2017 - iv - Summary During the five year period from 1 July 2012 to 30 June 2017, a total of 20,413 mosquito- borne infections were notified in Queensland. The most frequently reported was Ross River virus infection (13,921), followed by Barmah Forest virus infection (3,986), dengue (1,895), and malaria (437). Notifications of all other mosquito borne diseases (174) were sporadic. The majority (71.8%) of dengue notifications (1,360 of 1,895) were acquired overseas. There were 30 dengue outbreaks in Queensland over the reporting period. The two largest outbreaks both occurred in Cairns, with a total number of 146 (2012/13) and 136 (2013/14) cases, respectively. All cases of chikungunya (65), Zika virus infection (50), and Japanese encephalitis virus infection (3) were acquired overseas. Mosquito-borne diseases are important contributors to the overall numbers of notifiable conditions in Queensland. This, and the presence of competent vectors for local transmission, reinforces the need for ongoing surveillance and timely public health response. Mosquito Borne Diseases in Queensland , 1 July 2012 to 30 June 2017 - v - Introduction Mosquito borne diseases represent a significant global burden with a substantial proportion of the world’s population at risk.1, 2 A range of ecological, climatic, social, economic and behavioural factors influence the distribution of diseases and often their vectors; with the ease and availability of rapid international travel an important contributor. 3 The World Health Organization (WHO) maintains timely data on the global distribution of mosquito borne diseases.2 In Australia, national data on mosquito borne diseases of public health importance are maintained through the National Notifiable Diseases Surveillance System (NNDSS); with each state and territory contributing data under the requirements of the National Health Security Act (2007).4 The National Arbovirus and Malaria Advisory Committee (NAMAC)5, provides expert technical advice on mosquito borne diseases, and their vectors, to the Australian Government.6 The
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