Doherty Institute - Research Publications

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Author: Johnson, Paul × Author: O'Brien, Daniel ×

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    Buruli ulcer: a new case definition for Victoria
    Betts, JM ; Tay, EL ; Johnson, PDR ; Lavender, CJ ; Gibney, KB ; O'Brien, DP ; Globan, M ; Tzimourtas, N ; O'Hara, MA ; Crouch, SR (AUSTRALIAN GOVERNMENT, DEPT HEALTH & AGEING, 2020-12-21)
    Laboratory-confirmed infection with Mycobacterium ulcerans is currently notifiable to health departments in several jurisdictions. Accurate surveillance is imperative to understanding current and emerging areas of endemicity and to facilitate research into a neglected tropical disease with poorly-understood transmission dynamics. The state of Victoria currently reports some of the highest numbers of M. ulcerans cases in the world each year, with 340 cases notified in 2018 (an incidence of 5.5 per 100,000 population). In May 2019, a group of clinical, laboratory and public health experts met to discuss a new case definition for the surveillance of M. ulcerans disease in Victoria, incorporating clinical and epidemiological elements. The new case definition supports important public health messaging and actions for residents and visitors to popular tourist areas in Victoria.
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    The association of rainfall and Buruli ulcer in southeastern Australia
    Yerramilli, A ; Tay, EL ; Stewardson, AJ ; Fyfe, J ; O'Brien, DP ; Johnson, PDR ; Pluschke, G (PUBLIC LIBRARY SCIENCE, 2018-09)
    BACKGROUND: Buruli ulcer has been increasing in incidence in southeastern Australia with unclear transmission mechanisms. We aimed to investigate the link between rainfall and case numbers in two endemic areas of the state of Victoria; the Bellarine and Mornington Peninsulas. METHODOLOGY: We created yearly and monthly graphs comparing rainfall with local Buruli ulcer incidence for the period 2004-2016 by endemic region and then considered a range of time lag intervals of 0-24 months to investigate patterns of correlation. CONCLUSIONS: Optimal positive correlation for the Bellarine Peninsula occurred with a 12-month prior rainfall lag, however, no significant correlation was observed on the Mornington Peninsula for any time lag. These results provide an update in evidence to further explore transmission mechanisms which may differ between these geographically proximate endemic regions.