Dengue fever is spreading rapidly across the globe, exacerbated by climate change. In Bangladesh, 300,000 cases and 1,500 deaths have been reported, with India, Sri Lanka, and Mexico also facing major outbreaks. Dengue, carried by mosquitoes, has appeared in countries it has never reached before, including in Europe. The World Health Organization is warning that increased temperatures and human movement are contributing to the spread of dengue. Dengue is spread by the Aedes aegypti mosquito and is closely related to Zika and yellow fever. More frequent and severe outbreaks are anticipated due to global warming, especially in Southern US, Southern Europe, and parts of Africa. The risk is high now for roughly half of the world’s population, with 100 to 400 million infections estimated annually. Dengue, which has become a major public health threat worldwide, does not guarantee future immunity to the disease after first exposure, leaving victims at risk for subsequent, potentially fatal infections. With increasing temperatures and favorable breeding conditions, the threat of dengue reaching Canada is rising. Though dengue has not previously been found in Canadian mosquitoes, the risk is growing with changing climates and global migration.
Health officials are alarmed by the rapid spread of dengue globally, calling for stronger climate action from governments to help combat the spread of the disease.
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