Treasury department. United States Public health service. Influenza spread by droplets sprayed from nose and throat.

treasury-department-united-states-public-health-service-influenza-spread-by-droplets-sprayed-from-nose-and-throat

Treasury department. United States Public health service. Influenza spread by droplets sprayed from nose and throat. Cover each cough and sneeze with handkerchief. Spread by contact. Avoid crowds. If possible, walk to work. Do not spit on floor