Group 1 - The Shenzhen CDC has launched a function on its WeChat public account to help citizens locate dengue virus and chikungunya virus testing points, along with issuing prevention reminders [1] - Dengue fever and chikungunya are mosquito-borne diseases primarily transmitted by Aedes mosquitoes, with symptoms including high fever, severe headaches, and joint pain [1] - There are 560 hospitals and community health institutions designated for dengue virus testing and 51 for chikungunya virus testing in Shenzhen [1] Group 2 - Recent heavy rainfall and high temperatures in Shenzhen have increased the breeding environment for mosquitoes, necessitating preventive measures in various locations such as construction sites, communities, parks, and schools [2] - The core of preventing mosquito-borne diseases is to cut off transmission routes, which involves reducing mosquito breeding sources and ensuring personal protection [2] - Citizens are advised to eliminate standing water and regularly check and clean containers that may collect water to prevent mosquito larvae from developing [2]