chikungunya virus

Introduction

arboviral infection spread by mosquitoes found mostly in West and East Africa, around the Indian Ocean, Asia, and South East Asis including the Pacific Islands
NOT acquired in Australia - no known cases as of 2025 although the mosquitoes which can transmit it (Aedes aegypti and Aedes albopictus) are present in North Queensland and the Torres Strait
Réunion Island (east of Madagasgar) from August 2024 to June 2025, experienced a massive chikungunya epidemic, with more than 54,000 confirmed cases and 43 deaths, making it the second major Chikungunya virus outbreak on the island after the 2005-2006 epidemic, which had affected about a third of the islands' population. In 2025, it went on to reach other Indian Ocean islands and, over the summer, fueled unprecedented numbers of cases in more temperate regions of Europe and in China.¹⁾

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