Betacoronavirus, Coronavirus Infections/prevention & control, Pneumonia, Viral/prevention & control, Pandemics/prevention & control, Coronavirus Infections/epidemiology, Coronavirus Infections/diagnosis, Health Systems/organization & administration, Primary Health Care/organization & administration, Americas/epidemiology, World Health Organization, Fund Raising/economics, Global Health/trends, Vulnerable Populations, Gift Giving, Social Media, Polymerase Chain Reaction/methods, COVID-19, Ghebreyesus, Tedros Adhanom