You usually do not get lung nodules from vaccinations. Lung nodules are a manifestation of inflammation in the lungs, and their production may be caused by benign or malignant lesions in the lungs. Benign lesions include benign tumors, infections, pulmonary vascular abnormalities, inflammatory lesions, etc., and malignant lesions may be metastatic malignant tumors or primary lung cancer. Patients with lung nodules should be reviewed regularly under the guidance of a physician. If the nodules increase significantly in a short period of time, or if abnormalities occur in the morphology of the nodules, further examinations such as pathologic examinations are required. Vaccination is one of the most important measures for comprehensive prevention of infectious diseases, and it provides immunity against the infectious diseases for which the vaccine is intended. Patients who experience symptoms after vaccination should go to the hospital promptly. So there is no relationship between vaccination and lung nodules. Meanwhile, patients with lung nodules should follow the doctor’s instructions for regular follow-ups, and should also seek medical attention if they feel unwell during the period.