Scientists have issued a warning over the Oropouche virus, suggesting that the number of infections could be significantly higher than earlier estimates. The virus, also known locally as “sloth fever,” has raised public health concerns following recent research published in leading medical journals.
The warning comes after studies indicated that the disease, which causes sudden and severe joint and muscle pain, may have affected millions more people across Latin America than previously recorded.
Research suggests millions affected across Latin America
According to findings published in Nature Medicine and Nature Health, researchers estimate that around 9.4 million people may have been infected across Latin America and the Caribbean since 1960. In Brazil alone, the figure is estimated at approximately 5.5 million cases.
These estimates are based on mathematical modelling, historical records, and blood bank data analysis, suggesting that official case counts may have significantly underreported the true scale of infection.
In 2023, more than 30,000 cases were officially reported in Brazil and other Latin American countries, raising concerns about the spread of the virus in the region.
Health risks and complications
Experts say that while most cases are not fatal, the virus can cause severe complications in some patients. These may include neurological disorders, liver complications, miscarriages, and microcephaly in newborns.
Researchers noted that roughly one in every 1,000 diagnosed patients may develop serious complications, highlighting the potential public health impact.
Transmission through tiny biting insects
The Oropouche virus is transmitted through very small biting insects, which are about three times smaller than common mosquitoes. Scientists say this makes control and prevention more challenging in affected regions.
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