<s>[INST] How can we protect others and ourselves if we don't know who is infected? [/INST] 
You can protect yourself and others from COVID-19 by following preventive measures, such as keeping a distance, wearing a mask in crowded and poorly ventilated spaces, practicing hand hygiene, respiratory etiquette (covering your mouth and nose with a bent elbow or a tissue when you cough or sneeze), getting vaccinated and staying up to date with booster doses.

 Check local advice where you live and work.  Source: WHO. Link: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/question-and-answers-hub/q-a-detail/coronavirus-disease-covid-19-masks. Field: Infectious Disease. Disease: COVID </s>