Distinguish between Active Immunity and Passive Immunity

Differences between Active Immunity and Passive Immunity

Active immunity

  • Immunity achieved by immunization of host through active infection
  • Yes, there is active participation of host immune system
  • Takes time in production of specific antibodies and cells
  • Duration of immunity is usually for longer period of time

e. g. Tetanus vaccine

Passive immunity

  • Immunity achieved by transfer of performed or antibodies from immunized individual to non immunized one
  • No, there is no active participation of host immune system
  • Provides instant protection. No time lag.
  • Duration of immunity is only for short time period

e. g. Anti Tetanus Serum

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