how can covid weaken people but a covid vaccine doesnt? Dont all vaccines give a dose of the virus for the body to build antibodies, but the innitial vaccine injection is still a covid base that… would act like covid and weaken someone?
There is no actual Covid virus in a Covid vaccine. The Covid vaccine introduces a harmless RNA or a viral protein (a protein from the outer cover of the virus, not the virus itself) into the body which guises as the covid virus and instructs our bodies to create memory cells to help the body quickly fight the actual virus should we get it.
Our bodies before the pandemic never were introduced to Covid. When our immune system is first introduced to a complex virus like Covid it takes weeks sometimes to create an immune system response to fight it. By then for many it is too late.
The vaccine helps our body both recognize and be able to fight the virus. The Covid virus attacks our cells quickly and duplicates, covering our cells in a spiky protein that camouflages itself against our immune systems so our body can't fight and kill it. The mRNA or protein shell the vaccines introduces creates a similar spiky protein, but also instructs the immune system to recognize it as a threat. So, if we should actually get Covid our body remembers it, starts an immune response immediately, and is able to fight it off quickly (the longer the virus is in your body, the more it duplicates, and the harder it is to fight it).
So, Covid weakens you because it is an actual virus. The people weakened to an extent that would cause them death from it, or weaken them enough to cause other illnesses to kill them are mostly those who are unvaccinated because to their bodies Covid is a deadly stranger that it cant see.
The vaccine meanwhile actually strengthens you. The symptoms you would feel for the most part is your body being tricked. Your not really sick, your body just thinks you are.
The flu vaccine has a protein from it's virus in it, not the actual virus. Other Vaccines like the chicken pox vaccine has a weaker form of the virus in it.