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People who have had Dengue fever previously there is double the risk of developing symptoms of Covid-19 if they are infected with the coronavirus. The result is a study carried out by researchers from the ICB-USP (Institute of Biomedical Sciences at the University of São Paulo) that was recently published in the journal Clinical Infectious Diseases. During the study, the group analyzed blood samples from 1,285 residents of the city of Mâncio Lima, Acre. 37% of these cases were [...]

A newly discovered species of electric eel produces an 860 volt shock, the highest charge of any known animal in the world. The creature is one of two extra species of the fish identified by scientists, whoexamined 107 specimens from across the Amazon rainforest. The newly discovered eel delivers a zap more than 200 volts higher than ever previously recorded, butisunlikely to kill a human, according to experts. It was previously believed there was just one type of electric eel. The only [...]

Brazilian researchers have reconstructed the evolutionary history of amoebae and demonstrated that at the end of the Precambrian period, at least 750 million years ago, life on Earth was much more diverse than suggested by classic theory. The study, which was supported by São Paulo Research Foundation — FAPESP, revealed eight new ancestral lineages of Thecamoebae, the largest group in Amoebozoa. Thecamoebians are known as testates because of their hard outer carapace or [...]