New Crown 3 is usually referred to as New Crown Vaccine 3. Patients with breast enlargement nodules are usually allowed to get the third shot of New Crown when contraindications are ruled out. New Crown 3 may be the third shot included in the original vaccine, or it may be a booster shot for the vaccine. Whether it is the 3rd shot included in the original vaccine or the booster shot of the New Crown vaccine, patients with mastocytosis nodules are generally allowed to have the shot. However, it is necessary to rule out contraindications to vaccination. The main contraindications for the new crown vaccine include allergy to the vaccine, severe neurological disease, acute illness, and pregnancy, etc. For more detailed contraindications, please consult the vaccinator.