Betacoronavirus, Coronavirus Infections/prevention & control, Pneumonia, Viral/prevention & control, Pandemics/prevention & control, Coronavirus Infections/epidemiology, Ventilators, Mechanical/supply & distribution, Hospitals/supply & distribution, Hospital Bed Capacity/statistics & numerical data, Intensive Care Units/supply & distribution, Quarantine/organization & administration, Social Isolation/psychology, Public-Private Sector Partnerships, Chloroquine/therapeutic use, Adrenal Cortex Hormones/therapeutic use, Azithromycin/therapeutic use, Coronavirus Infections/drug therapy, COVID-19, Plano São Paulo, Germann, José Henrique