A new analysis reveals stark statistics on California’s dengue vulnerability. According to research published in The Lancet Regional Health – Americas, 75% of California’s population currently lives in areas supporting seasonal dengue transmission. Peak transmission occurs during summer months when 45% of the state becomes suitable for virus spread, while 28% experiences spring and fall transmission risk. Projecting forward, moderate climate change scenarios indicate transmission-suitable areas could expand by 60% by mid-century. This geographic expansion will intensify northward, bringing previously low-risk regions into the transmission envelope. The Central Valley and coastal urban centers show the highest current risk due to optimal temperature ranges and extensive mosquito breeding habitats created by urbanization. These data underscore the critical need for proactive public health intervention and vector surveillance. Read the full article on GMJ Newsroom.
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