Rafael González: Assistant Professor, Center for Applied Nanotechnology and Center for Applied Nanotechnology Faculty of Sciences, Universidad Mayor. Sergio Lavandero: Director and Principal Investigator of the Advanced Center for Chronic Diseases (ACCDiS). Topics: – Mathematical models that use real data to determine when quarantine is appropriate and thus avoid the collapse of our health system. – Biology of SARS-CoV-2. Why does this virus not cause symptoms in the digestive system? Everything can be explained by the proteins it binds to in the alveoli.