Diseases, Conditions, Syndromes

Brazil launches dengue vaccination amid outbreak

Brazil launched a dengue fever immunization campaign Friday, becoming the first country in the world to provide the vaccine through its public health system as it deals with a surge in cases.

Diseases, Conditions, Syndromes

Researchers start to find clues on the trail of long COVID

Tens of millions of people across the world are thought to suffer from long COVID, but four years after the pandemic was declared this elusive condition still cannot be tested for—let alone treated.

Diseases, Conditions, Syndromes

Brazil on dengue fever alert ahead of carnival

Sao Paulo opened an emergency operations center Tuesday to deal with a surge in dengue fever cases that has hit Brazil and South America just as millions of tourists arrive for carnival celebrations.

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