https://www.mayoclinic.org/diseases-conditions/coronavirus/symptoms-causes/syc-20479963

Although there is no vaccine available to prevent COVID-19, you can take steps to reduce your risk of infection. WHO and CDC recommend following these precautions for avoiding COVID-19:

Avoid large events and mass gatherings.

Avoid close contact (within about 6 feet, or 2 meters) with anyone who is sick or has symptoms.

Stay home as much as possible and keep distance between yourself and others (within about 6 feet, or 2 meters), especially if you have a higher risk of serious illness. Keep in mind some people may have COVID-19 and spread it to others, even if they don't have symptoms or don't know they have COVID-19.