The study was designed as a randomized controlled experimental research with the purpose of determining the effect of using Cold Application and Vibration in reducing pain during routine vaccination in children.

In the literature, it is stated that nurses should use pharmacological and non-pharmacological methods in pain and anxiety management in painful procedures. Evidence-based studies are needed to show the effectiveness of non-pharmacological methods in reducing pain during invasive procedures and to investigate the effects of easy-to-apply methods on pain.In light of this information, this study aimed to examine the effect of by using Cold Application and Vibration in reducing pain during routine vaccination in children. Cold Application and Vibration will be done with BUZZY.

This study is a prospective, randomized and controlled trial. Children aged 13 years who required routine vaccination were divided into three groups; placed under arm Buzzy, placed in standard Buzzy, and Control. Data were obtained through face-to-face interviews with the children, their parents, and the observer before and after the procedure. The children's pain levels were assessed and reported by the parents and observers and the children themselves who selfreported using Wong-Baker FACES.

The study population consisted of the children's during routine vaccination in children aged 13 years. Sample of the study consisted of a total of 90 children who met the sample selection criteria and were selected via randomization method.

Children were randomized into three groups; placed under arm Buzzy (n:30), placed in standard Buzzy (n:30), and Control (n:30). Data were collected using the Interview and Observation Form and Wong-Baker FACES Pain Rating Scale.

Inclusion Criteria:

• Children the ages of 13 years (planned to be included in the vaccination calendar program),
• Volunteering of the child and parent to participate in the study,
• Healthy children,
• Vaccination should be done by the same nurse,

Exclusion Criteria:

• The child has any acute or chronic disease,
• The child has a mental disability, vision, speech or communication problems,
• The parent has hearing, vision or verbal communication difficulties,
• The child used analgesics in the last 6 hours,
• Infection, disruption of skin integrity and rash in the area where theapplication will be made,
• Exclusion criteria were that the parent or child wanted to leave the study at any point.