infectivity

English

Etymology

infective +‎ -ity

Noun

infectivity (countable and uncountable, plural infectivities)

  1. The ability of a pathogen to establish an infection
    • 1972, Charles Allan Birch, The House Physician's Handbook, page 70:
      The reputation for low infectivity of rubella was probably based on failure to recognise rashless cases.
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