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Practice Listening: Multiple Choice, Single Answer
ID: #38470
Short
Organism
Transcript:
First, children should be vaccinated to protect them from acquiring diseases which may prove to be fatal or cause an incurable disability. There are three types of vaccines. The first is known as a killed vaccine as it is compromised of microorganisms which are killed through various processes. The vaccine for polio is an example of a killed vaccine. The second type of vaccine is known as life attenuated vaccine. This is comprised of living organisms which multiply to a certain extent in the body but do not produce any infection. And finally we have toxoids. Toxoids are bacteria that are made inactive but have the capacity to produce an immune response. Tittanus is an example of such a vaccine.
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