IndexIndexArtificial immunity.Artificial immunity.Natural immunity.Natural immunity.Differences.Differences.The immune system.The immune system.Vaccinations.Vaccinations.Credits.Credits.

ARTIFICIAL IMMUNITYARTIFICIAL IMMUNITYArtificial immunity Artificial immunity involves the use of involves the use of vaccine.vaccine.A A vaccinevaccine contains contains dead or harmless dead or harmless microbes.microbes.These microbes still These microbes still have antigens on have antigens on them.them.

Toxins (red and blue).Toxins (red and blue).

A vaccine is an A vaccine is an advanced warning so advanced warning so that if the person is that if the person is infected by the microbe infected by the microbe the white blood cells the white blood cells respond inmediatidly respond inmediatidly and kill them.and kill them.

Natural immunityNatural immunityMaking antibodies takes time, which is why you Making antibodies takes time, which is why you feel ill at first and then get better as the disease feel ill at first and then get better as the disease is destroyed by the white blood cells and is destroyed by the white blood cells and antibodies.antibodies.

Once a particular antibody is made it stays in Once a particular antibody is made it stays in your body. If the same disease enters your body your body. If the same disease enters your body later the antibodies are much quicker at later the antibodies are much quicker at destroying it and you feel no symptoms.destroying it and you feel no symptoms.You are You are now immune to that disease. now immune to that disease.

DiferencesDiferences The natural immunity: when you have a disease The natural immunity: when you have a disease

caused by microbes your white blood cells caused by microbes your white blood cells produce antibodies to fight them.produce antibodies to fight them.

But in an artificial immunity (vaccine), contains But in an artificial immunity (vaccine), contains dead or harmless microbes.dead or harmless microbes.

The immune systemThe immune systemWhite blood cells can make White blood cells can make chemicals called chemicals called antitoxins antitoxins that destroy the toxins that destroy the toxins produced by bacteria.produced by bacteria.

White blood cells engulf White blood cells engulf bacteria or viruses before bacteria or viruses before they have a chance to do any they have a chance to do any harm.harm.

However, if the micobes are However, if the micobes are there in large numbers, white there in large numbers, white blood cells produce blood cells produce antibodies antibodies to fight them.to fight them.

VaccinationsVaccinationsA vaccination is a special kind of A vaccination is a special kind of injection.injection.When you have a vaccination a When you have a vaccination a tiny amount of the virus that tiny amount of the virus that causes the disease is injected causes the disease is injected into your body. Your body then into your body. Your body then makes the antibodies to fight the makes the antibodies to fight the diseases. diseases. Many people get vaccinations Many people get vaccinations when they are young so that when they are young so that they can’t get infectious they can’t get infectious diseases like mumps or diseases like mumps or measles.measles.

If you are vaccinated against If you are vaccinated against measles and then “catch” the measles and then “catch” the virus your body makes the virus your body makes the antibodies for that virus so antibodies for that virus so quickly that they destroy the quickly that they destroy the virus without you even virus without you even knowing about it.knowing about it.

When vaccinated against a When vaccinated against a disease, you are more likely disease, you are more likely to be immune to that disease.to be immune to that disease.

Created by:Created by:Pablo Verdayes BuenoPablo Verdayes Bueno

Abelardo del Valle Abelardo del Valle DíazDíaz

Elena Allegue Elena Allegue GonzálezGonzálezTeacher:Teacher:

Mª Prado Rodríguez Mª Prado Rodríguez CelemínCelemínMusic by:Music by:Studios D.Studios D.