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Christian Zoeller

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Christian Zoeller
(1888 - 1934)
Born in
Year of Discovery: 1926
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ChristianZoeller
Tetanus could Finally Be Prevented and Controlled With His Team's Vaccine

Christian Zoeller conducted his research on the tetanus vaccine at the famed Pasteur Institute in Paris, which Louis Pasteur established in 1888. Pasteur's prestige allowed him to gather the most talented scientists from around the world to search for cures to the world's most devastating diseases. Zoeller teamed with French biologist and veterinarian Gaston Ramon to search for a vaccine to fight tetanus. Their efforts led to the production of a vaccine with consistent potency that could be mass-produced, which provided the first effective means of combating tetanus on a widespread basis.

Tetanus is caused by the attack of a neurotoxin (Tetanospasmin) that occurs naturally in the soil. The neurotoxin enters the body through a cut or a puncture wound. It's a spasmodic disease of the skeletal muscles that results in severe bodily contractions. Initial symptoms may include irritability, weakness, muscle cramps, and difficulty swallowing. The facial muscles are next to be involved and the jaw muscles may spasm, resulting in the inability to open one's mouth. This is what gives tetanus the name "lockjaw." The spasms then descend, engulfing the rest of the body. The back arches severely and the spasms may be severe enough to break bones and dislocate joints. The vocal cords and those involved in breathing may also be affected, resulting in death unless immediate medical attention and breathing support are provided. In the United States, because of widespread immunization, there are fewer than 50 cases each year. But tetanus continues to be a problem, especially in developing nations, and there are between 500,000 and one million cases each year worldwide. Tetanus is fatal in about 10 percent of the cases.

Formaldehyde would seem like an unlikely resource in developing a life-saving vaccine. But, that is exactly the critical component Zoeller and Ramon brought to their research. They discovered that by degrading the tetanus toxin with formalin (an aqueous solution of 40 percent formaldehyde) they could produce a stunning result: an antitoxin weakened to the point it would not cause active disease, yet still potent enough to produce an immune response. This was the critical breakthrough. These vaccines are known as "anatoxins," or "toxoids," and continue to be the basis of the tetanus antitoxins produced today. Their work produced a precisely formulated vaccine that allowed for mass production. The tetanus vaccine was widely used during World War II to protect soldiers form tetanus.

Sometimes patience pays off. Zoeller and Ramon continued to study the best use of the tetanus vaccine and found that immunity improved with longer intervals between injections. Antibody levels were higher when injections were given at three weeks instead of at 15 days, and higher still when the second treatment was given at one month. Other scientists later showed that antibody levels were higher still after an interval of several months, and the standard today calls for a booster dose of the tetanus vaccine every ten years.
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Introduction  by Tim Anderson


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Table of Contents

Introduction
Links to More Information About the Scientist
Key Insight
Key Experiment or Research
Key Contributors
Quotes by the Scientist
Quotes About the Scientist
Anecdotes
Fun Trivia About The Science
The Science Behind the Discovery
Personal Information
Science Discovery Timeline
Recommended Books About the Science
Books by the Scientist
Books About the Scientist
Awards
Major Academic Papers
Curriculum Vitae
Links to Science and Related Information on the Subject
Sources

 








Links to More About the Scientist & the Science

The National Academies Press article on Tetanus, referencing Zoeller:
http://books.nap.edu/openbook.php?record_id=2138&page=67

Companion encyclopedia of the history of medicine, by Bynum, referencing Zoeller:

Vaccines, by Plotkin, referencing Zoeller:



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Key Insight




Key Experiments or Research

 



Key Contributors
The Team
Explore other scientists who furthered this lifesaving advance.
Lifesavers: Diphtheria and Tetanus Vaccine
Paul Ehrlich
A legend in immunology - Ehrlich developed diphtheria therapy.
Emil von Behring
Originally intent on the priesthood, von Behring developed therapies against diphtheria and tetanus.
Shibasaburo Kitasato
"On loan to Germany," developed first effective therapies against diphtheria and tetanus.
Gaston Ramon
His ingenious techniques allowed diphtheria and tetanus vaccines to be used safely worldwide.




Quotes by the Scientist




Quotes About the Scientist




Anecdotes




Fun Trivia About the Science




The Science Behind the Discovery



Personal Information



Scientific Discovery Timeline




Recommended Books About the Science




Books by the Scientist




Books About the Scientist

 



Awards




Major Academic Papers Written by the Scientist



Curriculum Vitae



Links to Information on the Science





Sources/References