Quote:
Originally Posted by photon
And not all vaccines contain dead viruses.. some vaccines only contain proteins from the virus, or proteins shaped like parts of the virus. Or vaccines against the toxic products of some pathogens by using deactivated toxic products rather than vaccinating against the pathogen itself.
Getting a vaccine is like adding a key to the key ring of virus locks the immune system can unlock. Getting a new key doesn't weaken the system.
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Well getting a vaccine does add stress to the immune system. It essentially forces the body to react as if it is sick. The system is a finite system that can only work and combat sickness at a finite rate. As such, it does weaken the system for a very short period. Adding the key strengthens the system but there is a very short term price (couple of days) when extra load is put on the system and it becomes slightly less able to combat other threats.
Still well worth it to get the key though...