A comprehensive modeling study identifies three urgent takeaways for California’s public health response. First, the current situation is already serious: 75% of the state’s population resides in areas with seasonal dengue transmission potential, driven by the establishment of Aedes aegypti mosquitoes across multiple counties. Second, climate change will dramatically worsen the threat, with suitable transmission areas potentially expanding by 60% by mid-century, particularly affecting northern regions historically considered low-risk. Third, these findings demand immediate action. Enhanced mosquito surveillance systems must be implemented in high-risk regions, particularly the Central Valley and coastal metropolitan areas. Public health agencies should strengthen vector control programs and develop climate-adaptive strategies to prevent dengue outbreaks before they become widespread. Individual residents should remain vigilant about mosquito prevention measures, especially during peak transmission seasons. Read the full article on GMJ Newsroom.
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