Flu viruses are transmitted in various ways—even with a kiss. Or, an infected person can cough, sneeze, or talk and spray tiny infected droplets into the air. Those droplets are then breathed in through the nose or the mouth of anyone nearby.
An infected person can also cough, sneeze, or talk and spray tiny droplets into the air, which then plop onto tables, or doorknobs, or other surfaces. Individuals later touch those surfaces and get the droplets on their hands. When those same hands touch the nose, mouth, or eyes, the droplets are transferred from the surface to the body, and transmit the virus.
An infected person can also cough, sneeze, or talk and spray tiny droplets into the air, which then plop onto tables, or doorknobs, or other surfaces. Individuals later touch those surfaces and get the droplets on their hands. When those same hands touch the nose, mouth, or eyes, the droplets are transferred from the surface to the body, and transmit the virus.