Overview 2-week dc of MTX and Influenza Vaccination in RA Status: Unknown status Trial end date: 2017-08-01 Target enrollment: Participant gender: Summary To investigate whether a transient discontinuation of methotrexate MTX for 2 weeks improves the vaccination response to a seasonal influenza. Phase: N/A Details Lead Sponsor: Seoul National University HospitalTreatments: MethotrexateVaccines