[revealer]

This news is reliable?

Nothing from news media can be trusted unless they can quote and attach reliable medical sources where we can check and verify what tests they have done,  how they carry out the research, and what results they have found.   If they don't and cannot quote such sources,  their news reports are just giving hollow and empty talks.

This article from this Nature quoted several study sources from Thailand,  Hong Kong.  China and other countries who have published their findings in reputable medical journals such as medRxiv.  Although their papers are just pre-prints without peer reviews,  the research papers have questioned the length of protection of these vaccines because their power of immunity was waning.  https://www.nature.com/articles/d41586-021-02796-w