Immunity
Innate Immunity <ul><li>Innate immunity (inherited immunity or hereditary resistance) is an inborn genetic gift. </li></ul>
Acquired Immunity <ul><li>Acquired immunity is gained in life.  </li></ul><ul><li>It can be natural or artificial.  </li><...
Active Immunity <ul><li>Active immunity is the resistance developed against natural or artificial antigenic stimulation. <...
Passive Immunity <ul><li>Passive immunity is the ready-made resistance, passively transferred to a recipient.  </li></ul><...
 
Vaccines <ul><li>Vaccines are preparations of inactivated or killed microorganisms or their products. </li></ul><ul><li>Th...
Vaccines <ul><li>Vaccines do not normally cause disease, because they contain only inactivated or dead antigens. </li></ul...
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Immunity 3

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Transcript of "Immunity 3"

  1. 1. Immunity
  2. 2. Innate Immunity <ul><li>Innate immunity (inherited immunity or hereditary resistance) is an inborn genetic gift. </li></ul>
  3. 3. Acquired Immunity <ul><li>Acquired immunity is gained in life. </li></ul><ul><li>It can be natural or artificial. </li></ul><ul><li>The former develops as a defense against natural infections or antigens, whereas the latter develops in response to artificially administered vaccines, allergens etc. </li></ul>
  4. 4. Active Immunity <ul><li>Active immunity is the resistance developed against natural or artificial antigenic stimulation. </li></ul><ul><li>The immunity developed by an organism, due to the formation of antibodies from its own cells is called active immunity. </li></ul><ul><li>Active immunity is produced by two ways, </li></ul><ul><ul><li>By direct attack of pathogens (mumps and measles) </li></ul></ul><ul><ul><li>By vaccination (vaccine for polio) </li></ul></ul><ul><li>Active immunity involves the active functioning of the immune system. </li></ul><ul><li>Active immunity can provide effective long-term protection. </li></ul>
  5. 5. Passive Immunity <ul><li>Passive immunity is the ready-made resistance, passively transferred to a recipient. </li></ul><ul><li>Passive immunity occurs when an individual receives antibodies instead of making their own. </li></ul><ul><li>Passive immunity is short-lived because the person’s B and T cells have not been stimulated to produce antibodies. </li></ul><ul><li>The immunity lasts only as long as the antibodies they received remain in their bloodstream. </li></ul><ul><ul><li>Newborn babies have antibodies they received from their mother. </li></ul></ul>
  6. 7. Vaccines <ul><li>Vaccines are preparations of inactivated or killed microorganisms or their products. </li></ul><ul><li>The administration of vaccines to recipients is called vaccination. </li></ul><ul><li>The production of active immunity through vaccination is called active immunization. </li></ul>
  7. 8. Vaccines <ul><li>Vaccines do not normally cause disease, because they contain only inactivated or dead antigens. </li></ul><ul><li>At the same time they can trigger the functioning of the immune system and stimulate the production of antibodies </li></ul><ul><li>Sometimes two or more doses are required to develop sufficient immunity against some diseases. </li></ul><ul><li>In such cases the first dose is called trigger dose and the additional doses are called booster doses. </li></ul>

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