Introduction In December 2019, the first cases of the novel coronavirus disease (COVID-19) were reported in Wuhan, China. Since the pandemic designation in March 2020 by the World Health Organization (WHO), with intercontinental spread of the disease, we are intensely seeking for a safe and effective treatment. In vitro studies have demonstrated some effect of chloroquine against the new coronavirus, mediated by the glycosylation of SARS-CoV cell receptors and by increased endosomal pH, blocking cell invasion by the virus. In […]