Not the person you are replying to, but I believe they're referring to how the FDA approval letter for the vaccine indicates long term testing won't be complete

Not the person you are replying to, but I believe they're referring to how the FDA approval letter for the vaccine indicates long term testing won't be completed until June 2025. https://www.fda.gov/media/151710/download https://www.fda.gov/media/151710/download