Influenza (the flu) is a respiratory infection caused by the Influenza A or B virus. It is very contagious and can spread quickly and easily. Prior, we thought flu is spread easily from person to person by coughing, sneezing(large droplets), or touching contaminated surfaces. A more recent study of 2018 provides evidence that the fine aerosol droplets released during normal exhalation also transmit flu(shed virus). Before you even know you are sick, you can pass the flu on to