Introduction: Infection with the human immunodeficiency virus (HIV) represents, in Brazil and in the world, a public health problem: estimates show that, in 2017, 42,420 new cases of HIV were diagnosed in Brazil. Despite these high rates, it is noted that underdiagnosis is still a problem: data show that, in the United States, almost 15% of people infected with the HIV virus are unaware of this diagnosis. Objec...
Introduction: Researchers at Rockefeller University, New York, found in some seriously ill patients with Covid-19 a type of autoantibody that attacks other cells of the immune system. For scientists, this would be an indication that these patients had preexisting autoantibodies to the disease and that this would be the reason why they developed the severe form of Covid-19. Objective: Answer what is the evidence...