Influenza:(Flu)
Is thought to spread mainly person-to-person through coughing or sneezing of infected people.
The CDC recommends take everyday actions to stay healthy. Cover your nose and mouth with a tissue or when you cough or sneeze. Throw the tissue in the trash after you use it. Wash your hands often with soap and water, especially after you cough or sneeze. Alcohol-based hands cleaners are also effective.
CDC states "the use of a facemask or respirator is likely to be of most benefit if used as early as possible when exposed to an ill person and when the facemask or respirator is used consistently."