Vaccination campaigns against the novel coronavirus have started in various countries worldwide. Russia and China had started public vaccinations well before Phase 3 conclusions were released, with the former being criticized for the way it pre-approved its vaccine in the summer. Western countries, including the UK, US, Canada, European Union nations, and others have authorized three different vaccines for emergency use. Most countries already use the Pfizer/BioNTech drug, the first COVID-19 vaccine to seek emergency approvals.