Before revision: Personal protective measures Hand hygiene Respiratory etiquette Face masks Environmental measures upright=0.9|An open window can reduce infection by increasing ventilation, a cheap NPI Surface and object cleaning Germs can survive outside the body on hard surfaces for periods ranging from hours to weeks, depending on the virus and environmental conditions.
After revision: upright=1.0|An N95 respiratorPersonal protective measures Hand hygiene Respiratory etiquette Face masks Environmental measures upright=0.9|An open window can reduce infection by increasing ventilation, a cheap NPI Surface and object cleaning Germs can survive outside the body on hard surfaces for periods ranging from hours to weeks, depending on the virus and environmental conditions.