The Effect of Mechanical Vibration and Helfer Skin Tap Technique on Procedural Pain in Infants During Vaccination

Inclusion Criteria: * healthy term infants * born at 38-42 weeks gestational week, * birth weight 2500-4400 g, * in stable health, * able to carry out vital activities without support, * babies ordered third dose Hepatitis B vaccine by the doctor Exclusion Criteria: * with a genetic or congenital anomaly, * neurological, cardiological and metabolic diseases, * in need of respiratory support, * acute or chronic illness that causes pain, * a complication of childbirth, * nerve damage or deformity in the extremity to be vaccinated, scar tissue or incision in the vastus lateralis region.