Mummy what is herd immunity?

disease

herd immunityLearn to pronouncenoun

  1. resistance to the spread of an infectious disease within a population that is based on pre-existing immunity of a high proportion of individuals as a result of previous infection or vaccination.”the level of vaccination needed to achieve herd immunity varies by disease

Published by technofiend1

Kazan- Kazan National Research Technical University Казанский национальный исследовательский технический университет имени А. Н. Туполева he graduated in Economics in 1982

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