This disease can be fatal in up to 50% of severe cases, causing liver and kidney failure and severe bleeding, according to the National Institute of Healthfrom the United States.

What is happening with yellow fever?

According to a report from the Pan American Health Organization (PAHO) and WHO, during In 2025, 346 human cases of yellow fever were recorded in seven countries in America, with 143 deaths.which means an increase of 5.6 times that reported in 2024, when there were 61 confirmed.

While among the Epidemiological weeks 1 and 7 of this year (between January and February) there are 34 confirmed infections and 15 deaths due to yellow fever in humans, highlighting that these were recorded in the following countries:

• Bolivia: a death
• Colombia: 25 cases, including 13 deaths
• Peru: 2 cases
• Venezuela: 6 cases, including one death

Since in 2025 the infections were located as follows:

• Bolivia: 8 cases, including two deaths
• Brazil: 120 cases, including 48 deaths
• Colombia: 125 cases, including 46 deaths
• Ecuador: 11 cases, including eight deaths
• Guyana: a death
• Peru: 49 cases, including 19 deaths
• Venezuela: 32 cases, including 19 deaths

Given this, the institutions dependent on the United Nations (UN) called on the member states to “strengthen surveillance, intensify vaccination of at-risk populations and adopt the necessary measures to guarantee that people who travel to areas with reported cases are adequately informed and protected against yellow fever.”.

At the same time, he highlighted the importance of strengthened clinical management, as well as the emphasis on the detection and treatment of serious cases, emphasizing the need to have reserve doses of the yellow fever vaccine. “to ensure a rapid response to possible outbreaks”.

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