Progression of the leprosy reaction and nerve damage: A prospective cohort study in children with leprosy from the Brazilian Amazon.

Introduction: Leprosy reactions being closely related to damage to peripheral nerves and physical disabilities associated with disease progression. Disabilities in childhood can have a devastating effect with impaired children's cognitive, emotional, social, and educational development. We followed up the progression of leprosy reactions in children identifying associated factors with the emergence and/or worsening of nerve damage.

Altered leukocyte pattern and inflammatory markers in unvaccinated long covid patients: a cross-sectional study.

Long Covid results from the damage caused by SARS-CoV-2, involving the release of cytokines and the continuous activation of immune cells. This cross-sectional study investigates leukocyte and cytokine profiles in Long Covid patients in the Amazon, a region where such studies are limited. Blood samples were analysed for differential leukocyte counts and cytokine levels.

Unraveling the protective genetic architecture of COVID-19 in the Brazilian Amazon.

Despite all the efforts acquired in four years of the COVID-19 pandemic, the path to a full understanding of the biological mechanisms involved in this disease remains complex. This is partly due to a combination of factors, including the inherent characteristics of the infection, socio-environmental elements, and the variations observed within both the viral and the human genomes. Thus, this study aimed to investigate the correlation between genetic host factors and the severity of COVID-19.

Newborns with microcephaly in Brazil and potential vertical transmission of Oropouche virus: a case series.

Background: Oropouche fever, an orthobunyavirus disease endemic in Brazilian Amazon, has caused many febrile epidemics. In 2024, an epidemic of Oropouche fever spread in Brazil, with more than 7930 cases reported between Jan 1 and Aug 31. Infections in pregnant people have suggested the possibility of negative fetal consequences, therefore we tested newborns with microcephaly for known congenital pathogens and Oropouche virus (OROV).