The CC-RIO project (Climate Change and Infectious Risks in the Indian Ocean) aims to study the impact of climate change on dengue fever and leptospirosis, two emerging climate-sensitive infectious diseases in the south-west Indian Ocean islands. Led by CIRAD, this operational research project is part of the SEGA - One Health Network of the Indian Ocean Commission (IOC). The CC_RIO project aims to develop or improve operational predictive models of the risk of the two priority infectious diseases in the region in relation to climate, land use and socio-economic factors. This collaborative project will involve governments, public health decision-makers, in particular national programmes to combat these infectious diseases, and research institutes, working together to set up a network of partners. This project will help to build skills and capacities in the area of climate change and infectious diseases. It also aims to set up co-construction workshops and communication and lobbying activities with potential donors, as part of an organised strategy to set up larger-scale research projects on this theme, using the preliminary data acquired within the CC-RIO project. As part of the scientific activities planned within CC-RIO, and with the support of SEGA / IOC and the Vector Biology and Control Division of the Ministry of Health and Wellness of Mauritius (VBCD/MoHW), a scientific seminar on the impact of climate change on infectious diseases in the south-west Indian Ocean, which will be held in Mauritius from 12 to 13 September 2024 at Institut Français de Maurice, Julius Nyerere Ave, Beau Bassin-Rose Hill, from 8 .30 am to 4 pm. This scientific seminar will provide an opportunity to present current research work on the theme 'climate and infectious diseases' in the region, in particular that carried out as part of the CC-RIO project, to share results with researchers working on this theme in neighbouring tropical regions and to discuss the setting up of larger-scale res