Healthy adults will be once administered GC3114A(High-dose Quadrivalent influenza vaccine) or GCFLU Quadrivalent Pre-filled syringe inj..

Healthy adults will be once administered GC3114A(High-dose Quadrivalent influenza vaccine) or GCFLU Quadrivalent Pre-filled syringe inj.. Safety and immunological efficacy will be evaluated.

Inclusion Criteria:

• Healthy adults aged 19-64 years old
• Informed consent form has been signed and dated
• Able to comply with the requirements of the study

Exclusion Criteria:

• Known systemic hypersensitive to eggs, chicken proteins, or any of the vaccine components
• Personal history of Guillain-Barre syndrome(GBS)
• Subjects with severe chronic disease who are considered by investigator to be ineligible for the study
• Subjects who received a vaccination within 28 days before enrollment or who are scheduled for another vaccination during the study
• Immunocompromised subjects with immunodeficiency disease or subjects receiving immunosuppressive or immunomodulating therapy
• Pregnant or lactating women