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Objectives: We examine the public health response to an unprecedented multiple mortality event in bats following an extreme heat event. The main public health risk associated with the event and the environmental clean-up was potential human infection with Australian bat lyssavirus. We also consider the public health implications as we enter an age of climate change, vulnerability and unexpected events. Type of service: The Tropical Public Health Service of Far North Queensland worked collaboratively with the local council to coordinate a practical public health and health protection response to a mass mortality event in bats in late 2018., Methods: A coordinated response was instigated to remove thousands of decaying bat corpses from residential areas. This occurred alongside a health education campaign advising the public to avoid handling bats., Results: The combined efforts were successful; those requiring vaccination and post-exposure prophylaxis were treated appropriately and owing to a successful campaign, exposures were minimised. However, significant issues with misinformation and social media messaging were noted, alongside amateur bat carers handling sick and injured bats inappropriately, compounding the challenge for public health services. This mass mortality event has implications regarding the preparation for and management of other unexpected public health crises related to climate change., Lessons Learnt: It is vital that areas populated with bats be prepared for extreme heat events (EHEs). Public health units need to be prepared for the unexpected events of climate change, advocate for a 'one health' approach to public health, and work with local and national governments to become 'climate ready'., Competing Interests: All authors are employed by Queensland Health and, as part of their work, were directly involved in the public health response to the mass bat mortality event discussed in this manuscript.