Introduction
Smallpox is a viral disease that causes pus-filled boils on the dermis. It looks similar to chickenpox, but has certain characteristic differences. Unlike chickenpox, smallpox is lethal in 30% of the cases and leaves the victim with disfiguring scars and/or blindness. Smallpox has now been eradicated through aggressive vaccination. The last case was reported in Somalia in the late 1970’s. After 2 years of worldwide surveillance, the World Health Organization (WHO) confirmed that the disease had been eradicated.
Causative agent
Smallpox is caused by the Variola virus, which belongs to the Orthopoxvirus genus. The members of this genus share similar genetic makeup and characteristics. Viruses belonging to this family are large and measure nearly 220-450 nm x 150-260 nm in size. DNA is the genetic material that encodes for 200 proteins, approximately, using its 200,000 base pairs. The DNA is encapsulated inside a capsid, which in turn is enveloped by membrane proteins. Two forms of the virus cause smallpox. Variola major is the most common causative agent. Variola minor induced smallpox is rare and is not severe even for pregnant women and the fetus (Jahrling, 216).
History of smallpox
Smallpox is thought to have made its appearance sometime around 10,000 BC in Africa and is thought to have spread to India via Egyptian merchants. Smallpox killed nearly 30% and blinded 1/3rd of the infected population. Throughout the history, it became apparent that those who survived the disease acquired lifelong immunity. As the fear of the disease grew, people resorted to the practice of variolation, which was the act of subcutaneous inoculation of the contents of a smallpox pustule into a non-infected person. However, variola...
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...States of America and the other in Russia. If these vials were to be stolen, one could expect a very difficult battle. Some countries such as Switzerland have stored numerous vials of the smallpox vaccine to immunize if such a circumstance were to arrive (Henderson, 165).
Works Cited
Fenner, F., et al. "Smallpox and its eradication." Geneva: WHO (1987).
Henderson, D. A. "Smallpox virus destruction and the implications of a new vaccine." Biosecurity and bioterrorism: biodefense strategy, practice, and science 9.2 (2011): 163-168.
Jahrling, Peter B., et al. "Smallpox and related orthopoxviruses." Medical aspects of biological warfare. TMM Publications, Office of The Surgeon General, Washington, DC (2007): 215-240.
Riedel, Stefan. "Edward Jenner and the history of smallpox and vaccination." Proceedings (Baylor University. Medical Center) 18.1 (2005): 21.
This summer we had an opportunity to dive into the world of bioweapons, through Richard Preston’s novel The Demon in the Freezer. His book explored the colorful world of smallpox and its use as a biological weapon. Earlier this week we were graced with this authors present for an ACES event. He discussed some of the found topics in his book such as animal testing, what small pox is, and even its eradication. One of the great things we had the chance of vocalizing were our many opinions on the gloom associated with this intriguing disease.
18) Powell, Alvin. "The Beginning of the End of Smallpox."news.harvard.edu. N.p.. Web. 13 Mar 2014. .
“Future nations will know by history only that the loathsome smallpox has existed and by you extirpated”. This quote comes from Thomas Jefferson to Edward Jenner, he founder of the smallpox vaccine. It would only be 100 years later that Jefferson would see his dream fulfilled, but not without struggle. In House on Fire, author William H. Foege shares his first hand view of the lengths that society needed to go through to rid the world of the disease that had plagued it for so long. The story of the fight against smallpox extends long before our efforts for global eradication and is a representation of how society deals with widespread disease. House on
The Demon in the Freezer by Richard Preston is an intriguing book that discusses the anthrax terrorist attacks after 9/11 and how smallpox might become a future bioterrorist threat to the world. The book provides a brief history of the smallpox disease including details of an outbreak in Germany in 1970. The disease was eradicated in 1979 due to the World Health Organization’s aggressive vaccine program. After the virus was no longer a treat the World Health Organization discontinued recommending the smallpox vaccination. In conjunction, inventory of the vaccine was decreased to save money. The virus was locked up in two labs, one in the United States and one in Russia. However, some feel the smallpox virus exists elsewhere. Dr. Peter Jahrling and a team of scientists at the U.S. Army Medical Research Institute of Infectious Diseases in Maryland became concerned terrorists had access to the smallpox virus and planed to alter the strain to become more resistant. These doctors conducted smallpox experiments to discover more effective vaccines in case the virus were released. Preparedness for a major epidemic is discussed as well as the ease with which smallpox can be bioengineered.
In closing, the variola virus affected a great amount in that era including, military strategy, trade, and native populations. Elizabeth A. Fenn’s book Pox Americana: The Great Smallpox Epidemic of 1775-82 sheds light on a significant aspect of that era that had not been given proper credence beforehand. She also illuminated the effect of smallpox when it came to race and social status. With regard to race, smallpox decimated much of the non European populations partly because of their lack of an innate immunity to that virus and Europeans lack of regard for those of a different race. Fenn’s argument on social status showed how the poorer strata’s of society suffered more severely from the variola virus because of their lack of finances to get inoculated; thus, the poor often suffered a worse strain of the virus which often lead to death.
A different perspective on a smallpox epidemic during the French and Indian War appears in Andrew J. Blackbird's History of the Ottawa and Chippewa Indians of Michigan. Blackbird, Chief Mack-e-te-be-nessy, was a member of a distinguished Ottawa family from the northwest shore of the Michigan lower peninsula. He wrote his History late in life, after a long career in education, politics, and public service.
You woke up a week ago feeling odd. You were not sure what was wrong, but your body was full of aches, you felt hot to the touch, and you kept vomiting. Your mother told you to lay down and rest, hoping it was just a cold. After a few days, you began to feel better, well enough that you wanted to return to the river to watch the trade ships come in. Now, unfortunately, your symptoms have come back with a vengeance – your fever is back along with intense abdominal pain, your mouth is bleeding without being wounded, and every time you vomit, it appears black in color. Also, when you look in the mirror, your skin has changed from the sun-kissed color you have always been to a dull yellow hue. The doctor comes in to examine you; he makes many “tsk tsk” noises and hurries out of the room with a cloth over his face. The doctor mumbles to your mother that he believes you have Yellow Jack and there is nothing more he can do, you are going to die. Your mother weeps uncontrollably yet you cannot react because another horrendous pain in your head has doubled you over. Soon, as you stop shaking and begin to relax, the sounds of the doctor and your mother become white noise and your surroundings begin to dull until you prove the doctor right; another person fell victim to the infectious Yellow Fever virus.
Throughout the eighteenth and nineteenth century a disease dominated the world killing one in three people who caught it, smallpox. The few that survived the disease were left with very disfigured bodies and weak immune systems. In modern days this disease seems very unusual and hard to catch; it is all because of one man, Edward Jenner.
The perspective the author gives to this book is a unique. Smallpox according to most histories does not play the role of a major character, but a minor part. In my opinion smallpox was a major factor during the Revolutionary War, and Feen focuses on several key areas which allows us to see just how bad this epidemic was and the grip it had not only on the soldiers, but the colonist as well.
In order to understand the history of smallpox one first has to understand how diseases like it evolve. Much like other species, diseases that survive in the long run are the microbes that most effectively reproduce and are able to find suitable places to live. For a microbe to effectively reproduce, it must "be defined mathematically as the number of new infected per each original patient." This number will largely depend on how long each victim is able to spread the virus to other victims (Diamond, 198).
By preserving the virus, Boylston personally inoculated 247 people in 1721 and 1722 to prevent transmission. However, from there only six people died, and Boylston was the first American surgeon to inoculate his patients personally. The author portrays the background data Boylston used to examine the inoculation practice on different age and gender of persons to treat his patients from previous experiments. The inoculation method provided higher level of immunity in preventing smallpox infection. The prevention of smallpox is through inducing antibodies through vaccines which last longer for a person taking it.
Henderson, Donald A., et al. “Smallpox as a Biological Weapon: Medical and Public Health Management.” Journal of the American Medical Association 281.22 (June 1999). 24 July 2008 .
During one of his earlier apprenticeships, Jenner noticed milkmaids with a disease called cowpox. Cowpox is a close relative to smallpox and is only mild in humans. Pustules appear on the hands and a basic cold is also brought on. At Jenner’s young age he was able to link these two viruses together and come up with a theory for immunization. In 1796, while still attending medical school, Jenner decided to test this theory between smallpox and cowpox. He used a dairymaid, who was a patient of his named Sarah Nelms, who had contracted cowpox and had ripe pustules on her hands. Jenner realized this was his opportunity to test someone who had not contracted smallpox yet. He picked an eight-year old boy named James Phipps to use as his test subject. He scraped open a spot of James' arm and rubbed in a dissected piece of Sarah Nelms pustule into the open wound. A couple days later James became ill with cowpox but was well again within a week. This test proved that cowpox could be spread between humans as well as cows. Jenner's next test would be if the cowpox virus gave James immunity against smallpox. On July 1st of 1796, Edward Jenner obtained an infected smallpox pustule and scratched the virus filled pus into James' arm. This technique of placing a virus into a patient is called variolation. James Phipps did not develop smallpox within the
Vaccines are one of modern medicine 's game-changing breakthroughs, but they have been around for hundreds of years earlier in primitive forms. Dating back to medieval times, the first precursor to modern vaccination occurred in China around the tenth century. (2) Known as variolation or inoculation, the method was used to prevent smallpox that plagued Europe and Asia. (2) Chinese doctors found that when healthy people were exposed to smallpox scab tissue, they were less likely to get infected or got a milder, less dangerous case. (2) The most common form of inoculation in China was to crush smallpox scabs into powder and then breathe it through the nose.(2) Because smallpox was such a destructive disease, in the late 1700 's, George Washington ordered mandatory inoculation for troops who hadn 't survived smallpox before. (2) Also in the late 1700 's, Edward Jenner