a vaccine which prevents or eases the severity of the problems from an infection that has already occurred.

A polio vaccine that is taken by mouth, and contains the three serotypes of polio in a weakened live state.

plural of therapeutic vaccine

plural of Sabin vaccine

(medicine, historical) A pointed piece of quill or bone covered at one end with vaccine matter, used before syringes.

plural of vaccine point

(historical) A period of civil disorder that occurred from 10 to 16 November 1904, in the city of Rio de Janeiro, Brazil, in response to government officials entering homes to administer smallpox vaccines by force.

plural of DPT vaccine

(medicine, chiefly US) Any publicly administered vaccine comprising a combination of vaccines against diphtheria, pertussis (whooping cough) and tetanus.

(medicine) Mutation of a pathogen to a point where it is no longer recognized and counteracted by existing vaccines.