live vaccines

Attenuated microbe injections

Live vaccines contain weakened but still-living versions of the pathogens they protect against.

The weakened organisms can replicate enough to trigger an immune response without causing full-blown disease in healthy people: The MMR is a live vaccine, so immunocompromised patients may need alternatives.

Contrast with inactivated vaccines, which use killed pathogens.

Opposites
mechanism of antigen presentation

live vaccinesmRNA vaccines

Immunizations using coded genetic instructions

DNA vaccines

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