|
Not all vaccines use dead virus or bacteria. Some have live but weakened virus or bacteria in it.
The body makes antibodies for what ever foreign matter (virus or bacteria) in the vaccine even if its dead. The body sees foreign matter and attacks it. The body makes record of this matter but it takes time to do this. Thats what vaccines are for. It showes the body the foreign matter in dead or weakened state. When you get infected the body knows this is foreign matter and attacks it right off before it can multiply.
The weakened virus can still cause damage and thats not good for a growing embryo.
|