A few days before Rio Carnival, Brazil threatened by dengue fever. Rio de Janeiro has declared a state of public health emergency.

São Paulo and Brasilia are also affected. The government announced two weeks ago that a free vaccination campaign targeting 3.2 million people would take place in February. But the start date of immunization with the Qdenga vaccine, produced by the Japanese laboratory Takeda, has still not been announced. The government recently announced it was studying the possibility of increasing the number of doses available by producing vaccines in Brazil.