10LymeB: all vaccines "train the immune system" to fight disease.. the covid vaccines are no different in that sense.
They do this by allowing the immune system to get a sneak peek at either some part, or the whole of an offending pathogen. In turn the adaptive immune system can develop and fine tune its response to said pathogen, before there is ever exposure in the real world.
Traditional vaccines use whole weakened or whole inactivated virus to accomplish this. The Sinovac and Sinopharm covid vaccines use whole inactivated virus.
Novavax's covid vaccine contains only the portion of the virus known as the spike protein.
Pfizer and Moderna vaccines send code (mRNA) to human cells. The code instructs human cells to actually make the spike protein temporarily.
Astrazeneca and J&J do kinda the same thing but instead they use a modified virus to deliver the code.
Aside from that there may be other concerns around the adjuvants or preservatives.. and I can understand hesitancy as it relates to having or having had Lyme disease.
Post Edited (potsnpans) : 5/8/2021 6:34:48 PM (GMT-6)