Simultaneous vaccination with new corona vaccine and influenza vaccine is possible. However, vaccines other than influenza vaccine cannot be vaccinated at the same time as the new corona vaccine. Each can be vaccinated two weeks after receiving the other vaccine.
Please see below for details.
Ministry of Health, Labor and Welfare New Corona Vaccine Q&A (external site)
Ministry of Health, Labor and Welfare "15th local government briefing session (held on August 10, 2022)" excerpt from some materials
inquiry
This page is in charge of the new coronavirus vaccination coordinator .