Is a cold sore contagious even immediately after it heals?

Yes, a cold sore can still be contagious even after it appears to have healed, as the virus can remain present in the skin and bodily fluids. The risk of transmission is lower once the sore has completely scabbed over and healed, but it's still advisable to avoid close contact, especially kissing or sharing utensils, until you are sure it is fully resolved. Taking precautions, such as avoiding touching the area and practicing good hygiene, can help prevent spreading the virus.