Bacteria are alive, and will actively fight back against your immune system. You can try to vaccinate against them by putting their cell markers into the system, but this often isn’t as effective or long lasting as anti-virus vaccines.
Viruses are more like biological land mines than enemy soldiers – you can tip off the immune system early to what their markers look like and will usually have very high immunization success rates. They rely on being undetected until the infection has progressed significantly and can’t actively fight off attacking immune cells.
Vaccines for both use dead or badly damaged cells/surface markers to “teach” your immune system how to identify them.
Latest Answers