John Snow Cholelera Outbreak Case Study

In two years between 1918 and 1919, A pandemic of influenza swept mercilessly over the planet, killing millions which stood in its path. Miraculously, the exact origin of the pandemic is unclear. What is exceedingly clear, however, is that often the actions of man aided in the spread of the virus, whether due to inadvertent endangerment, close quarters, religious principles, or failure to recognize the true threat that influenza posed.

1. The Europeans poured have poured something into the water which sterilized the water and killed the toxins that become disruptive in the digestive system when they are consumed. They Europeans may have poured what are called oral rehydration salts into the well, which quickly works are combatting the cholera, and will prevent further outbreaks from occurring.

The work of these two men changed the contemporary views on how disease was spread. By solving the cholera mystery, they helped contribute to making the world safe for bigger cities. Over the next few years a lot of changes were made. Both the medical and public health establishments latched onto Snow’s waterborne theory and through one of the greatest feats in engineering history, London started the process of making an entirely new sewer system. This, along with other precautions such as boiling water that was suspected to be contaminated, brought an end to city-wide choleric outbreaks. Besides the improvements in sewage, the improvements of sanitary conditions all around greatly diminished the spread of disease and held a major part in making the modern city possible. Overall, it turned out that something that was once horrendous and deadly for a massive amount of people, eventually turned out to be helpful for the future of mankind. (Johnson)

The book “The Great Influenza: The Story of the Deadliest Pandemic in History, written by John M. Barry, covers the progression of the Spanish influenza, especially in the United States. Barry focuses not only on the influenza itself, though, but also on the social influences that allowed the virus to flourish. The book covers how medical practices in the United States had risen up just in time to combat the virus, but, due to societal issues and the war, the doctors struggled in areas where they should have been successful.

A reviewer in the London Medical Gazette suggested that Snow find people living side by side with lifestyles similar in all aspects except of their water source. He made this suggestion because this would ensure that the neighbors breathe the same air and resemble each other more in variables other than the water source. This would guarantee that the water is the source, and not other factors that is causing the cholera.

Since 1878, the US Public Health System has been collecting information on infectious conditions for the purpose of early identification and control of massive outbreaks, including, when necessary, instituting quarantines

He linked the common illness cholera to people whom drank from the wells. He observed those getting ill and which areas and pumps they drank from and recorded it on a map, he was then able to establish all those getting ill were in fact drinking from the same pump, and consequently in 1854 John Snow removed the handle of the Broad Street pump and ceased the epidemic of Cholera in Soho, London

In the early 1900’s medicine was making some steps closer into some great improvements for health and better understanding of the human body. Doctors with sufficient knowledge of the human body and cures for diseases and viruses were scarce. People were much more concerned with government and politics, than health and medicine, until one of the greatest and most grotesque lethal pandemics that’s struck the earth in human history. This pandemic the “Spanish Flu” spread so rapidly and had an extremely high mortality rate. This was caused by the close contact of humans and poor cleanliness and sanitation, and the host (virus) and the body taking harsh action

Although most disease struck the poorest, the upper class was not fully immune. Because people wanted to move to cities to make their lives better, they were forced to live around these diseases without proper means for prevention, protection, and recovery. Once contracting the disease, they would either die within hours or suffer from uncontrollable diarrhea and pain. In addition, scientific knowledge on disease was not as developed as it fortunately is today. Doctors had not yet learned the concept of a germ theory and instead associated the disease with the “bad air” that surrounded toxic, polluted cities. This “bad air” was known as miasa and was incorrectly used to explain the spread of cholera in major cities during the mid 1800s. After studies and research, doctors noticed that there was a heavy concentration of miasmata near certain rivers, but they still connected it to a lack of air quality in bustling cities such as Manchester, London, and Paris. Although air pollution and coal emissions did play a role in certain illnesses, they were not the main cause for diseases such as cholera. Poor ventilation, dirty homes, malnourishment, and no access to clean water made people easily susceptible to a ruthless disease like cholera. Moreover, causes of cholera were investigated more thoroughly after John Snow’s theory claimed that cholera was spread through the water John Snow was an English physician who is today considered one of the fathers of modern epidemiology, the branch of medicine that deals with the distribution and control of diseases relating to health. Finally, doctors could see cholera in a new light and were able to find better means of protection and prevention for its victims. Today, doctors recognize the germ theory of disease which states that some diseases are caused by microorganisms, and not just by “bad

Snow, a man from the modest home of a labourer, uncommon roots for the men in his profession, made exceptional discoveries which were found by using the most novel thinking and common surveyor’s techniques. He was the first to consider the waterborne theory of cholera and looked at the outbreak from a street and a birds-eye view which in the end allowed him to see the patterns of the outbreak. Whitehead was the local curate who had a first-hand look at the lives of those who were affected by this deadly pathogen. It was he who, spurred on by disprove Snow’s claims, found the crucial evidence that in the end solidified Snow’s theory. Farr was a man with a similar background to Snow, who collected much of the raw statistical data used by Snow to develop and then support his theory. Farr’s information also lead Snow to map out patterns of cholera deaths in the St. James region, creating the “Ghost Map”, an instrumental tool in the defense of his theory.

The hygiene movement helped in the avoidance of communicable diseases, diseases for example cholera, tuberculosis and water illnesses in large part by modifying the people surroundings. In the 1850s, John Snow assisted in recognized the importance in data collection and documentation. His actions terminated an outbreak of cholera in a district of London. Using the same methodology Ignaz Semmelweis, applied it to restraint fever of childbirth a major source of maternal mortality. The reason that this was happening was that after physicians worked on the death bodies, usually they did not wash their and delivered babies and contaminating both, the mother and the baby.

In the book The Great Influenza: The Epic Story of the Deadliest Plague in History, John Barry depicts an epidemic disease greater than anything the world has ever known. The story takes place during World War I, after a deadly virus breaks out during the war. The disease gradually increases as people carried it from country to country, spreading it to those who were not immune to it. With its speed, it ending up killing over one hundred million people across the globe in the span of a year. It killed more people in twenty-four months than the Black Death killed in a century. In this chronical, Barry illustrates the story of medicial men and their search to try and fight this epic disease.

The epidemiology triangle has three sides. The sides consist of the host, the agent and the environment. The host is the person who is affected by the disease. The agent is the organism causing the disease. “In the case of type II diabetes, the agent could be the absence of a substance.” (McMurray, 2006). The agent interacts with the host and the environment to cause the disease. The environment is all the outside conditions that make the host susceptible to the agent. One condition of the environment could be the health of the host.

Throughout history until the 19th century, infectious diseases, epidemics, and pandemics were thought to be the manifestation of supernatural forces and little to nothing was truly effective in preventing or treating these devastating threats to society. It was only during the Age of Reason and the Enlightenment that the long-accepted realities of society were questioned and research was conducted based on science and reason that would forever change the world we live in (Kumar, 2007). The science of epidemiology was founded by John Snow’s identification of polluted public water well as the source of an 1854 cholera outbreak in London. Shortly thereafter germ theory began to emerge and science took off.

threats are now posed by diseases in which lifestyle play a role in the causation and or