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The History of Vaccines explores the role of immunization in the human experience and examines its continuing contributions to public health

Vaccine Development, Testing, and Regulation
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Systems for developing and testing vaccines emerged after the 19th century, when many vaccines began to be used. The current system for developing, testing, and regulating vaccines developed during the 20th century as the groups involved standardized their procedures and regulations.

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Biological Weapons, Bioterrorism, and Vaccines
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A biological attack may seem more like a plot element in an action film than a realistic threat. Biological attacks, however, have occurred in the past. A collection of U.S. government agencies are involved in planning responses to potential biological attacks.

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Different Types of Vaccines
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Vaccines are made using several different processes. They may contain live viruses that have been attenuated (weakened or altered so as not to cause illness); inactivated or killed organisms or viruses; inactivated toxins (for bacterial diseases where toxins generated by the bacteria, and not the bacteria themselves, cause illness); or merely segments of the pathogen (this includes both subunit and conjugate vaccines).

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The Human Immune System and Infectious Disease
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The human immune system is essential for our survival in a world full of potentially dangerous microbes.

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Female Aedes aegypti feeding
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Female Aedes aegypti, carrier of yellow fever, feeding
Which vaccine-preventable disease is sometimes referred to as “the black vomit”?
Rabies
Smallpox
Yellow fever
Typhoid
C

Yellow fever can cause internal bleeding, leading to bloody vomit. Read more