Brazil’s Ministry of Health has begun releasing sterile male Aedes aegypti mosquitoes in the indigenous village of Cimbres, in the municipality of Pesqueira, state of Pernambuco, in yet another effort to combat dengue, Zika, and chikungunya. In a statement, the ministry reported that 50 thousand insects have been released with the aim of strengthening arbovirus control in the region.

“The strategy prevents mosquitoes from producing offspring when they mate with females, contributing to the gradual reduction of the vector population and virus transmission,” the statement reads.

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According to the ministry, the initiative marks the beginning of the implementation of the sterile insect technique in indigenous territories. Planned for the next phases is the weekly release of more than 200 thousand sterile mosquitoes. The initial investment is BRL 1.5 million – covering production, logistics, and monitoring.

In addition to Cimbres, the technology will also be implemented in indigenous territories in the states of Bahia and Rio Grande do Sul.

The continuity and expansion of the initiatives will depend on the results achieved and the technical evaluation of the teams involved, the ministry said. The data will enable the analysis of the impact on the reduction of cases of dengue, Zika, and chikungunya.

Sterile insect technique

The sterile insect technique uses the species itself to reduce the population of Aedes aegypti. In the laboratory, male mosquitoes are sterilized by ionizing radiation, rendering them incapable of producing offspring, and are then released in large numbers in target areas.

When mating with females, the males do not produce offspring, leading to a progressive decrease in the population of arbovirus vectors.

“Because it does not use insecticides and poses no risk to health or the environment, the technique is recommended for indigenous territories located in conservation areas and forests, where the use of chemicals is restricted or prohibited,” the ministry stated.

In a statement published Friday (Dec. 12), the US government removed the name of Brazilian Supreme Court Justice Alexandre de Moraes from the list of persons under the Magnitsky Act.

The name of his wife, lawyer Viviane Barci de Moraes, and the Lex Institute, linked to the justice’s family, were also scrapped.

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The decision was made by the Office of Foreign Assets Control of the US Department of the Treasury.

The Magnitsky Act sanctions were imposed on Justice Alexandre de Moraes by the Donald Trump administration in late July. In September, his wife’s name was also added to the list.

The act

The Magnitsky Act is a tool in US law used to unilaterally punish alleged human rights violators abroad. Among other things, the measure blocks the assets and companies of those targeted by the sanctions in the US.

Among the penalties are the freezing of bank accounts, assets, and holdings within US jurisdiction, as well as a ban on entry into the country.

In applying the sanction to Moraes, the US Department of the Treasury accused Justice Alexandre de Moraes of violating freedom of expression and authorizing “arbitrary arrests,” citing the trial of the attempted coup by Brazilian former President Bolsonaro as well as court decisions against US social media companies.

According to Treasury Secretary Scot Besset, Moraes is responsible for an oppressive campaign of censorship, arbitrary detentions that violate human rights, and politicized prosecutions, “including against former President Jair Bolsonaro.”

Brazil’s Ministry of Planning and Budget confirmed Wednesday (Dec. 10) that the country’s minimum wage will be adjusted from the current BRL 1,518 (USD 276.70) to BRL 1,621 (USD 295.53), an increase of BRL 103 (USD 18.78) – or 6.79 percent.

The amount was confirmed after the release of the National Consumer Price Index (INPC), used to calculate the annual minimum wage adjustment. The indicator registered 0.03 percent in October and has increased 4.18 percent in 12 months.  

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The minimum wage adjustment will be applied in January 2026, affecting the wages workers receive in February.