Cases of yellow fever tripled in the US countries in 2025, says who; Brazil leads records

The country concentrates most of the infections, with 110 cases and 44 deaths

Cases of yellow fever In the region of the Americas tripled by 2025 compared to the same period of 2024, according to the World Health Organization (WHO).

Until 2 May 212 cases were confirmed in five countries, against 61 last year – an increase of 247%. Brazil concentrates most infections, with 110 cases and 44 deaths. There were also records this year in Bolivia, Colombia, Ecuador and Peru.

Overall, 85 deaths have already been reported to whom. The data represents a otality rate of 40%, considered high, but varies according to the location. In Ecuador, for example, the four cases reported caused deaths (lethality of 100%).

Different regions

In 2024, the human cases of yellow fever were notified mainly in Amazon region From Bolivia, Brazil, Colombia, Guyana and Peru. This year, however, the cases have been detected mainly in other areas, including the interior of San Paolo.

In the state of Saint Paul, The greatest number of deaths for the disease was recorded in seven years: There were 55 cases and 31 deaths.

There was also notification in the States of Minas Gerais, with 10 cases and 5 deaths; Pará, with 44 cases and 7 deaths; and Tocantine, with 1 fatal case. The most infected were males, which represented 89.6% of patients and ages varied from 10 to 75 years. Only one person had a yellow fever vaccination record.

All patients reported exposure to wild or forest areas, through professional or recreational activities. However, it is not possible to ignore that the disease can have an urban cycle. For those who, the risk to public health in affected countries are considered high, especially in view of the fall of vaccinations since then Covid-19 pandemic.

“The increase in confirmed cases of yellow fever in the Americas has highlighted the need to strengthen surveillance, the vaccination of risks and risk communication strategies for people who travel to areas where vaccination is recommended”, evaluates the organization.

The disease

The yellow fever is caused by an arbovirus transmitted to humans mainly by the mosquito bite Haemagogus AND Aedes Aegypti.

THE The transmission takes place with two different types of cycles, wild and urban. In the wild cycle, the monkeys are the main hosts and the carriers are mosquitoes of genres Haemagogus AND Sabethes. Here, humans participate as accidental guests when they attend the areas of the forest.

In the urban cycle, humans are the only guests with epidemiological importance and transmission through mosquitoes Aedes Aegypti infected by the virus.

What are the symptoms?

According to Moacyr Silva, infectiousness of Israelite Hospital Albert EinsteinYellow fever has symptoms similar to those of various infectious diseases, not having a characteristic signal.

“Symptoms include body pain, fever and malaise. In subsequent and serious cases, spontaneous bleeding may occur, “he said in an interview with Estodão. “If the person has a fever and continuous malaise, it is important to look for a basic health unit to evaluate the clinical picture.”

Importance of vaccination

Vaccination is the most effective form to combat disease. Currently, the vaccination calendar provides for a dose of the immunior at 9 months and another at 4 years. In people over the age of 5 previously vaccinated, the single dose scheme is used. The immunner is offered free of charge in health seats across the country.

Source: Terra

Ben

Ben Stock is a lifestyle journalist and author at Gossipify. He writes about topics such as health, wellness, travel, food and home decor. He provides practical advice and inspiration to improve well-being, keeps readers up to date with latest lifestyle news and trends, known for his engaging writing style, in-depth analysis and unique perspectives.