We describe a visual algorithm to help prevent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) contagion as well as manage COVID-19 disease according to categories of clinical severity. The algorithm is timely, with multiple countries worldwide declaring repeat surges in SARS-CoV-2 infections following the easing of lockdown measures. Its flowchart assimilates key effective interventions in a visual manner that will assist healthcare workers to manage COVID-19 disease algorithmically, and policymakers to suppress further SARS-CoV-2 waves. Importantly, we include the innovative use of topical p-menthane-3,8-diol spray by the British Army for COVID-19 Support Force personnel, which in light of its coronavirucidal properties, deserves wider dissemination. This algorithm has the potential to be updated as numerous studies are concluded globally.