GENEVA (AP) — The World Health Organization (WHO) said Friday that reported cases of dengue globally increased tenfold over the last generation, with climate change and the growing spread of virus-carrying mosquitoes partly to blame for transmission that remains mostly prevalent in the Americas.
The WHO said reported cases soared to a record 5.2 million in 2019, up from 500,000 in 2000, across 129 countries worldwide, figures that likely understate the actual toll.
In January, WHO warned that dengue posed a pandemic threat and was the world's fastest-spreading mosquito-borne disease.
While there are vaccines and specially bred mosquitoes containing a bacteria called Wolbachia to fight dengue, there are no specific treatments for the virus once someone becomes infected.
This year, more than five million cases and over 5,000 dengue-related deaths were reported, WHO said.
Changing distribution patterns of the mosquitoes that spread dengue, together with higher rainfall, humidity and heat linked to climate change, have been factors in the rise.
Weaker health systems and poor surveillance have also played a part.
Most cases of dengue don't cause symptoms or cause mild illness, though some infections can result in shock, severe bleeding and organ impairment – symptoms that typically emerge after fever has faded, WHO said.
Warning signs include intense abdominal pain, persistent vomiting, bleeding gums, fluid accumulation, lethargy or restlessness, and liver enlargement, the agency said.
Repeat infections can result in severe disease, which can cause haemorrhaging and death.
Dengue swept across the Western hemisphere this year. It isn't established in Europe, though some locally spread cases have turned up in the southern part of the continent since 2010.
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WHO cites tenfold increase in reported cases of dengue over the last generation - Jamaica Gleaner
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