Yes, you may be contagious (able to pass the infection to other people). Influenza virus is highly contagious. It can spread easily through droplets of saliva, or when someone coughs or sneezes.
If you’re taking Tamiflu, the drug will help fight the influenza virus inside you. But you may still be able to infect other people while you’re taking the drug.
People who have the flu are contagious for up to 5 to 7 days after their flu symptoms begin. Even if you’re feeling better, you may still be able to spread the flu during this time.
You can help lower the risk of spreading influenza by:
washing your hands often
covering your face when you cough or sneeze
avoiding touching your face, especially your eyes, nose, and mouth
staying home when you’re sick