I started with the chest congestion on December, 18th. I still have congestion and a nasty cough. My Grandson was sick on Christmas Eve with the flu, but we thought he just had a cold. Gave it to my other Daugter-in-law and Granddaughter who have been to the ER with 105 temps. Now my Step-son has it and the older Granddaughter is starting to cough. Now my husband has what I had. They all had flu shots and have it twice as bad as my husband and I do. But this hangs on forever. Coworker has been sick for 3 months with bronchitis. Nasty stuff. & we take Vitamin C and D3 all the time!