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María´s school: Colegio Villa de Móstoles
Irene´s school: Colegio Santa María de Yermo

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María in 2017 went to the biology olympiad. She didn´t win, but it was her beginning in the scientific world.

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A vaccine is a type of medicine that trains the body’s immune system so that it can fight a disease it has not come into contact with before. Vaccines are designed to prevent disease, rather than treat a disease once you have caught it.

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In this page, you can find the whole history of vaccines. Of this timeline, we highlight:
- Edward Jenner: smallpox vaccine.
- Louis Pasteur: definition of vaccination process and the rabies vaccine.
- Robert Koch: isolate the pathogen of tuberculosis and Koch´s postulates.

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The story of vaccines did not begin with the first vaccine-Edward Jenner's use of material from cowpox pustules to provide protection against smallpox. Rather, it begins with the long history of infectious disease in humans, and in particular, with early uses of smallpox material to provide immunity to that disease.

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Vaccines contain a weakened or inactive part of a microorganism to promote an immune response in the body. Once a person in vaccinated, the body is left with a suply of "memory" T cells, as well as B cells that will remember how to fight that disease in the future.

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How do vaccines work? - Kelwalin Dhanasarnsombut

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Each vaccine under development must first undergo screenings and evaluations to determine which antigen should be used to invoke an immune response. An experimental vaccine is first tested in animals to evaluate its safety and potential to prevent disease.

If the vaccine triggers an immune response, it is then tested in human clinical trials in three phases.

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Many dangerous infectious diseases can be prevented in this simple and effective way. Vaccinating not only protects yourself, but also protects those in the community who are unable to be vaccinated. If you are able to, get vaccinated.

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The covid-19 vaccine is an mRNA vaccine that creates inmunity against this virus.

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How the COVID-19 vaccines were created so quickly - Kaitlyn Sadtler and Elizabeth Wayne

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What does the future hold for vaccination?

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What does the future hold for vaccination?