Scientists at the University of São Paulo released preliminary data this Monday from research into the Brazilian mammarena virus, or thrush virus. The incidence of the virus was re-recorded in Brazil after more than 20 years without anyone infected. It is very dangerous, the virus causes Brazilian hemorrhagic fever.
The most recent cases occurred in 2019 in rural São Paulo, when two men died within days of diagnosis. They all had symptoms such as fever, muscle aches and pains, dizziness and nausea.
According to preliminary data from the study, published on the USP website, one of the hypotheses of infection is “inhalation of viral particles, possibly from rat feces”.
“We believed, based on other Mammarena viruses in South America, that the person may have been infected by inhaling viral particles, perhaps from rat feces. But this has not been proven accurate because we have very few cases reported,” said Dr. Ana Catharina Nastri. . from USP School of Medicine.
Since the registered cases were in rural areas, with few laboratory and diagnostic resources, the doctor believes that some cases have not been registered. This prevents a complete summary of Brazilian hemorrhagic fever.
“We don’t know if there really are any weak cases, like jaundice, which is among the most severe cases to those who have no symptoms at all,” Ana Nastri said.
In the country
The first case of the sabiá virus was registered in Cotia, São Paulo, in 1990. The second case occurred nine years later, in Espírito Santo do Pinhal. The two most recent discoveries were in Assis, in 2019, and in Eldorado, in 2020.
The Eldorado patient was a 52-year-old man who had walked through a forest in the city of Eldorado and began to experience symptoms such as muscle aches, abdominal pain, and dizziness. He was in the hospital but had to return four days later, when he was hospitalized. During that time, he also had a high fever and drowsiness.
During the hospital stay, the patient’s clinical condition worsened until he was transferred to the Intensive Care Unit (ICU), ten days after the symptoms began. The man had high blood pressure, kidney failure, decreased consciousness and high blood pressure. He died two days later.
In Assisi, a 63-year-old rural worker was diagnosed with fever, generalized myalgia, nausea and vomiting. He needed to be put in a dungeon eight days later, as his condition worsened, and he lost consciousness and could not breathe. He died 11 days after the first symptoms.
The study also found that there were no cases of sabiá virus infection within a hospital setting. However, since there are so few registered cases, it is impossible to draw conclusions about the types of infections.
“This shows that with the usual precautions, such as helmets, gloves, glasses and aprons, there was no infection, and it makes us calm about our viruses,” said Ana Nastri.