The world faced many public health challenges this year, including dangerous heat waves and outbreaks of the infectious diseases dengue and mpox. In the United States, after years of increases, there are early but promising signs of a downward trend in drug overdose deaths.
Dengue, mpox and bird flu raised alarms
Dengue exploded in the Americas, where countries have reported more than 12.6 million cases as of early December, according to the Pan American Health Organization. In 2023, there were about 4.6 million cases. Mpox became a public health emergency again, with close to 60,000 confirmed and suspected cases in Africa by early December, according to the World Health
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