Dengue rates are rising globally, with reported cases since 2000 up eight-fold to 4.2 million in 2022, WHO said.
About half of the world's population is now at risk, Dr. Raman Velayudhan, a specialist at the WHO's control of neglected tropical diseases department, told journalists in Geneva on Friday.
Already, close to 3 million cases have been reported in the Americas.
WHO says reported cases of the disease, which causes fever and muscle pain, represent just a fraction of the total number of global infections since most cases are asymptomatic. It is fatal in less than 1% of people.
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