I had a 7-10 day virus complete with sore throat, cough, congestion. I notice now that my lymph node under my jaw is swollen. I am recovered from the virus. How long will lymph nodes stay swollen?

There are several causes to Swollen lymph nodes. They can become swollen from infection, inflammatory conditions, an abscess, and cancer. You were just sick so that is the most likely cause of your swollen lymph nodes and you are not probably 100% better. If they continue to stay swollen, then it would be a good idea to go to your doctor and have this checked out.

Hope I helped. Happy holidays