To assess the safety of MG1111 and to evaluate immunological non-inferiority of MG1111 versus comparator

Inclusion Criteria:

• Healthy children aged 12 months to 12 years.
• Subjects or parent/legal representative willing to provide written informed consent and able to comply with the requirements for the study - Subject able to attend all scheduled visits and to comply with all study procedures
• Negative history of Varicella and varicella vaccine
• Subject in good health, based on medical history and physical examination

Exclusion Criteria:

• Subjects who have a history of Varicella or administration of varicella vaccine
• Subjects who have ahd an acute febrile episode at some time during the 72 hours before administration of investigational product or those who had any symptom suspected to be allergy including systemic rash.