老大，如果担心mRNA疫苗的质量，最好的咨询对象也许是你的本家

Dr Tiequn Zhou at email: [e-mail]. 

https://www.who.int/docs/default-source/biologicals/ecbs/reg-considerations-on-rna-vaccines_1st-draft_pc_tz_22122020.pdf?sfvrsn=c13e1e20_3