人體免疫有T細胞及B細胞，AZ就是去引發T細胞去記憶病毒;而mRNA(莫德納或BNT)是誘發B細胞去產生抗體，但莫德納記憶性差，時間久了，就忘了，所以，要補第三劑甚至第四劑。目前比較好的作法是第一打AZ，第二劑打莫德納。

No response has been written yet. It is recommended to maintain a healthy skepticism towards it.