Skip to main content

Home/ 7th Grade Research 2014/ Group items tagged death rate

Rss Feed Group items tagged

a-a-ron butler

Black Death - 0 views

  • Black Death Victims in the Middle Ages - TreatmentsThe Black Death victims in the Middle Ages were terrified of the deadly disease. The plague held a massive mortality rate between 30 and 40%. Victims had no idea what had caused the disease. Neither did the physicians in the Middle Ages. The most that could be done was that various concoctions of herbs might be administered to relieve the symptoms - there was no known cure. Headaches were relieved by rose, lavender, sage and bay. Sickness or nausea was treated with wormwood, mint, and balm. Lung problems were treated with liquorice and comfrey. Vinegar was used as a cleansing agent as it was believed that it would kill disease. But bloodletting was commonly thought to be one of the best ways to treat the plague. The blood that exuded was black, thick and vile smelling with a greenish scum mixed in it.Black Death Treatment: Black Death was treated by lancing the buboes and applying a warm poultice of butter, onion and garlic. Various other remedies were tried including arsenic, lily root and even dried toad. During a later outbreak of this terrible plague, during the Elizabethan era, substances such as tobacco brought from the New World were also used in experiments to treat the disease.
  • Black Death in England - 1348-1350 The Black Death reached England in 1348. Bristol was an important European port and city in England during the Medieval era. It is widely believed that Bristol was the place where the Black Death first reached England. The plague reached England during the summer months between June and August. The Back Death reached London by 1st November 1348. London was a crowded, bustling city with a population of around 70,000. The sanitation in London was poor and living conditions were filthy. The River Thames brought more ships and infection to London which spread to the rest of England. The crowded, dirty living conditions of the English cities led to the rapid spread of the disease. Church records that the actual deaths in London were approximately 20,000. Between 1348 and 1350, killed about 30 - 40% of the population of England which at the time was estimated to be about five to six million. Many people were thrown into open communal pits. The oldest, youngest and poorest died first. Whole villages and towns in England simply ceased to exist after the Black Death.
  • The Black Death and ReligionDuring the Middle Ages it was essential that people were given the last rites and had the chance to confess their sins before they died. The spread of the deadly plague in England was swift and the death rate was almost 50% in isolated populations such as monasteries. There were not enough clergy to offer the last rites or give support and help to the victims. The situation was so bad that Pope Clement VI was forced to grant remission of sins to all who died of the Black Death. Victims were allowed to confess their sins to one another, or "even to a woman". The church could offer no reason for the deadly disease and beliefs were sorely tested. This had such a devastating effect that people started to question religion and such doubts ultimately led to the English reformation.
  • ...5 more annotations...
  • Key Dates relating to the event: This terrible plague started in Europe in 1328 and lasted until 1351 although there were outbreaks for the next sixty years
  • called the Black Death because one of the symptoms produced a blackening of the skin around the swellings.
  • buboes were red at first, but later turned a dark purple, or black.
  • spread of the Black Death followed all of the Trade Routes to every country
  • Nearly one third of the population of died - about 200 million people in Europe The 1328 outbreak in China caused the population to drop from 125 million to 90 million in just fifty years7500 victims of the disease were dying every day
jacklynn jackson

The 1918 Influenza Pandemic - 4 views

  • In the fall of 1918 the Great War in Europe was winding down and peace was on the horizon.
  • The Americans had joined in the fight, bringing the Allies closer to victory against the Germans. Deep within the trenches these men lived through some of the most brutal conditions of life, which it seemed could not be any worse. Then, in pockets across the globe, something erupted that seemed as benign as the common cold. The influenza of that season, however, was far more than a cold. In the two years that this scourge ravaged the earth, a fifth of the world's population was infected. The flu was most deadly for people ages 20 to 40. This pattern of morbidity was unusual for influenza which is usually a killer of the elderly and young children. It infected 28% of all Americans (Tice). An estimated 675,000 Americans died of influenza during the pandemic, ten times as many as in the world war. Of the U.S. soldiers who died in Europe, half of them fell to the influenza virus and not to the enemy (Deseret News). An estimated 43,000 servicemen mobilized for WWI died of influenza (Crosby). 1918 would go down as unforgettable year of suffering and death and yet of peace. As noted in the Journal of the American Medical Association final edition of 1918:
  • The influenza pandemic circled the globe. Most of humanity felt the effects of this strain of the influenza virus. It spread following the path of its human car
  • ...14 more annotations...
  • The effect of the influenza epidemic was so severe that the average life span in the US was depressed by 10 years. The influenza virus had a profound virulence, with a mortality rate at 2.5% compared to the previous influenza epidemics, which were less than 0.1%. The death rate for 15 to 34-year-olds of influenza and pneumonia were 20 times higher in 1918 than in previous years (Taubenberger). People were struck with illness on the street and died rapid deaths. One anectode shared of 1918 was of four women playing bridge together late into the night. Overnight, three of the women died from influenza (Hoagg). Others told stories of people on their way to work suddenly developing the flu and dying within hours (Henig). One physician writes that patients with seemingly ordinary influenza would rapidly "develop the most viscous type of pneumonia that has ever been seen" and later when cyanosis appeared in the patients, "it is simply a struggle for air until they suffocate," (Grist, 1979). Another physician recalls that the influenza patients "died struggling to clear their airways of a blood-tinged froth that sometimes gushed from their nose and mouth," (Starr, 1976). The physicians of the time were helpless against this powerful agent of influenza. In 1918 children would skip rope to the rhyme (Crawford):
  • The origins of this influenza variant is not precisely known. It is thought to have originated in China in a rare genetic shift of the influenza virus. The recombination of its surface proteins created a virus novel to almost everyone and a loss of herd immunity. Recently the virus has been reconstructed from the tissue of a dead soldier and is now being genetically characterized. The name of Spanish Flu came from the early affliction and large mortalities in Spain (BMJ,10/19/1918) where it allegedly killed 8 million in May (BMJ, 7/13/1918). However, a first wave of influenza appeared early in the spring of 1918 in Kansas and in military camps throughout the US. Few noticed the epidemic in the midst of the war. Wilson had just given his 14 point address. There was virtually no response or acknowledgment to the epidemics in March and April in the military camps. It was unfortunate that no steps were taken to prepare for the usual recrudescence of the virulent influenza strain in the winter. The lack of action was later criticized when the epidemic could not be ignored in the winter of 1918 (BMJ, 1918). These first epidemics at training camps were a sign of what was coming in greater magnitude in the fall and winter of 1918 to the entire world.
  • The influenza pandemic of 1918-1919 killed more people than the Great War, known today as World War I (WWI), at somewhere between 20 and 40 million people. It has been cited as the most devastating epidemic in recorded world history. More people died of influenza in a single year than in four-years of the Black Death Bubonic Plague from 1347 to 1351. Known as "Spanish Flu" or "La Grippe" the influenza of 1918-1919 was a global disaster.
  • The influenza pandemic of 1918-1919 killed more people than the Great War, known today as World War I (WWI), at somewhere between 20 and 40 million people. It has been cited as the most devastating epidemic in recorded world history. More people died of influenza in a single year than in four-years of the Black Death Bubonic Plague from 1347 to 1351. Known as "Spanish Flu" or "La Grippe" the influenza of 1918-1919 was a global disaster.
  • The influenza pandemic of 1918-1919 killed more people than the Great War, known today as World War I (WWI), at somewhere between 20 and 40 million people. It has been cited as the most devastating epidemic in recorded world history. More people died of influenza in a single year than in four-years of the Black Death Bubonic Plague from 1347 to 1351. Known as "Spanish Flu" or "La Grippe" the influenza of 1918-1919 was a global disaster.
  • The war brought the virus back into the US for the second wave of the epidemic. It first arrived in Boston in September of 1918 through the port busy with war shipments of machinery and supplies. The war also enabled the virus to spread and diffuse. Men across the nation were mobilizing to join the military and the cause. As they came together, they brought the virus with them and to those they contacted. The virus killed almost 200,00 in October of 1918 alone. In November 11 of 1918 the end of the war enabled a resurgence. As people celebrated Armistice Day with parades and large partiess, a complete disaster from the public health standpoint, a rebirth of the epidemic occurred in some cities. The flu that winter was beyond imagination as millions were infected and thousands died. Just as the war had effected the course of influenza, influenza affected the war. Entire fleets were ill with the disease and men on the front were too sick to fight. The flu was devastating to both sides, killing more men than their own weapons could
  • The pandemic affected everyone. With one-quarter of the US and one-fifth of the world infected with the influenza, it was impossible to escape from the illness. Even President Woodrow Wilson suffered from the flu in early 1919 while negotiating the crucial treaty of Versailles to end the World War (Tice). Those who were lucky enough to avoid infection had to deal with the public health ordinances to restrain the spread of the disease. The public health departments distributed gauze masks to be worn in public. Stores could not hold sales, funerals were limited to 15 minutes. Some towns required a signed certificate to enter and railroads would not accept passengers without them. Those who ignored the flu ordinances had to pay steep fines enforced by extra officers (Deseret News). Bodies pilled up as the massive deaths of the epidemic ensued. Besides the lack of health care workers and medical supplies, there was a shortage of coffins, morticians and gravediggers (Knox). The conditions in 1918 were not so far removed from the Black Death in the era of the bubonic plague of the Middle Ages.
  • In 1918-19 this deadly influenza pandemic erupted during the final stages of World War I. Nations were already attempting to deal with the effects and costs of the war. Propaganda campaigns and war restrictions and rations had been implemented by governments. Nationalism pervaded as people accepted government authority. This allowed the public health departments to easily step in and implement their restrictive measures. The war also gave science greater importance as governments relied on scientists, now armed with the new germ theory and the development of antiseptic surgery, to design vaccines and reduce mortalities of disease and battle wounds. Their new technologies could preserve the men on the front and ultimately save the world. These conditions created by World War I, together with the current social attitudes and ideas, led to the relatively calm response of the public and application of scientific ideas. People allowed for strict measures and loss of freedom during the war as they submitted to the needs of the nation ahead of their personal needs. They had accepted the limitations placed with rationing and drafting. The responses of the public health officials reflected the new allegiance to science and the wartime society. The medical and scientific communities had developed new theories and applied them to prevention, diagnostics and treatment of the influenza patients.
  • The influenza pandemic of 1918-1919 killed more people than the Great War, known today as World War I (WWI), at somewhere between 20 and 40 million people. It has been cited as the most devastating epidemic in recorded world history. More people died of influenza in a single year than in four-years of the Black Death Bubonic Plague from 1347 to 1351.
  • The effect of the influenza epidemic was so severe that the average life span in the US was depressed by 10 years.
  • "The 1918 has gone: a year momentous as the termination of the most cruel war in the annals of the human race; a year which marked, the end at least for a time, of man's destruction of man; unfortunately a year in which developed a most fatal infectious disease causing the death of hundreds of thousands of human beings. Medical science for four and one-half years devoted itself to putting men on the firing line and keeping them there. Now it must turn with its whole might to combating the greatest enemy of all--infectious disease," (12/28/1918).
  • I had a little bird, Its name was Enza. I opened the window, And in-flu-enza.
  • riers, along trade routes and shipping lines. Outbreaks swept through North America, Europe, Asia, Africa, Brazil and the South Pacific (Taubenberger). In India the mortality rate was extremely high at around 50 deaths from influenza per 1,000 people (Brown).
  • With the military patients coming home from the war with battle wounds and mustard gas burns, hospital facilities and staff were taxed to the limit. This created a shortage of physicians, especially in the civilian sector as many had been lost for service with the military. Since the medical practitioners were away with the troops, only the medical students were left to care for the sick. Third and forth year classes were closed and the students assigned jobs as interns or nurses (Starr,1976). One article noted that "depletion has been carried to such an extent that the practitioners are brought very near the breaking point," (BMJ, 11/2/1918). The shortage was further confounded by the added loss of physicians to the epidemic. In the U.S., the Red Cross had to recruit more volunteers to contribute to the new cause at home of fighting the influenza epidemic. To respond with the fullest utilization of nurses, volunteers and medical supplies, the Red Cross created a National Committee on Influenza. It was involved in both military and civilian sectors to mobilize all forces to fight Spanish influenza (Crosby, 1989). In some areas of the US, the nursing shortage was so acute that the Red Cross had to ask local businesses to allow workers to have the day off if they volunteer in the hospitals at night (Deseret News). Emergency hospitals were created to take in the patients from the US and those arriving sick from overseas.
  •  
    the influenza
  •  
    influenza facts  
Jalen Rector

Black Death -- Britannica School - 1 views

  • Black Death, pandemic that ravaged Europe between 1347 and 1351, taking a proportionately greater toll of life than any other known epidemic or war up to that time. The Black Death is widely believed to have been the result of plague, caused by infection with the bacterium Yersinia pestis.
  • Hence, the origin of modern plague epidemics lies in the medieval period. Other scientific evidence has indicated that the Black Death may have been viral in origin.
  • A rough estimate is that 25 million people in Europe died from plague during the Black Death.
  • ...2 more annotations...
  • The rate of mortality from the Black Death varied from place to place: whereas some districts, such as the duchy of Milan, Flanders, and BĂ©arn, seem to have escaped comparatively lightly, others, such as Tuscany, Aragon, Catalonia, and Languedoc, were very hard hit.
    • Megan Sherwin
       
      I am sorry that there are a few grammatical errors in here (first and last sentence highlighted), but the information is good, and it comes from Britannica
    • Megan Sherwin
       
      Some info on the Black Death now vs. 700 years ago
  •  
    Black Death
  •  
    black death
Bethany Carter

yellow fever death rate - Google Search - 1 views

    • Bethany Carter
       
      Yellow Fever Death Rate
  • There are an estimated 200 000 cases of yellow fever, causing 30 000 deaths, worldwide each year, with 90% occurring in Africa. The virus is endemic in tropical areas of Africa and Latin America, with a combined population of over 900 million people
  •  
    Death rate for yellow fever
a-a-ron butler

The Black Death - 0 views

  • during the High Middle Ages (1000-1300)
  • Waste accumulated in the streets for lack of sewer systems
  • traced back to the Gobi Desert of Mongolia in the 1320s.
  • ...19 more annotations...
  • was the spread eastward to China
  • the traders carried the bacterium yersinia pestis in the rats on board as well as in some of the sailors themselves. The Black Death had arrived in Europe.
  • Once the flea bites a human, infected blood from the rat is introduced to the healthy blood of the human, and the bacteria spreads. Death occurs in less than a week for humans. A high fever, aching limbs, and fatigue mark the early stages of infection. Eventually, the lymph nodes of the neck, groin, and armpit areas swell and turn black. Those black swellings on victims are what give the Black Death its name. The victim begins to vomit blood and in some instances suffer hysteria from fever and terror. Exposure to any body fluids means exposure to the bacterium, and thus spreading the disease is very easy through coughing victims. The victim dies shortly after the lymph nodes swell until bursting within the body.
  • As winter approached, colder temperatures killed fleas and caused rats to seek dormancy
  • disease was not gone, it was simply dormant for a few month
  • bubonic plague is actually the weakest strain of known plagues.
  • Black Death was solely caused by the bubonic strain of plague has been questioned
  • which infects the respiratory system
  • other two strains are the septicaemic plague, which infects the circulatory system in victims, and the pneumonic plague
  • Black Death killed virtually all infected people raises doub
  • bubonic plague is not as fatal compared to the other two strains (which have mortality rates close to 100%)
  • the site of the first plague cases in Italy, Messina:
  • Soon the boils grew to the size of a walnut, then to that of a hen's egg or a goose's egg,
  • There was not nearly enough consecrated ground for each victim to have an individual plot, and so enormous trenches were dug into which layer upon layer of dead bodies were lain. The trench was topped off with a small layer of soil,
  • Pope Clement VI even consecrated the entire Rhone river so that corpses could be thrown into it for lack of earth.
  • people, and considered it to be a punishment from an angry God. Some peasants resorted to magic spells, charms, and talismans.
  • Some people burned incense or other herbs as they believed that they overpowering smell of the dead victims was the source of the disease.
  • Some people even tried to "drive the disease away" with sound from church bells and canon fire
  • Churchmen, and public officials considered the disease to be just that; a disease.
jace givens

Yellow Fever Epidemic of 1793 - Wikipedia, the free encyclopedia - 1 views

  • Between the College's advisory on August 25 and the death of Dr. Hutchinson from yellow fever on September 7, panic spread throughout the city; more people fled. Between August 1 and September 7, 456 people died in the city. On September 8, 42 deaths were reported.[18] An estimated 20,000 people left the city through September, including national leaders.[9] The daily death to
  • l remained above 30 until October 26. The worst 7-day period was between October 7 and 13, when 711 deaths were reported.[18]
  • During the Yellow Fever Epidemic of 1793 in Philadelphia, Pennsylvania, 5000 or more people were listed in the official register of deaths between August 1 and November 9. The vast majority of them died of yellow fever, making the epidemic in the city of 50,000 people one of the most severe in United States' history. By the end of September, 20,000 people had fled the city. The mortality rate peaked in October, before frost finally killed the mosquitoes and brought an end to the epidemic in November. Doctors tried a variety of treatments, but knew neither the origin of the fever nor that it was transmitted by mosquitoes (which was not verified until the late nineteenth century).
  •  
    panic of yellow fever
  •  
    how yellow fever started 
Darien Fuller

Flu Facts - INFLUENZA 1918-1919 - 2 views

  • Characteristics 1) Start Suddenly 2) Spread Rapidly 3) People of all ages are affected4) Many people become ill5) The attack rate and death rate is high
    • Darien Fuller
       
      what to look for the influenza
  • The 1918 Influenza causes twenty to forty million deaths worldwide. More than one half of the casualties from World War I were from the flu.The Flu infected 25% of United States troops during the war killing more than one million men, according to War Department records. The Flu caused 500,000 deaths in the United States. In the States alone, 25 million people became ill. Twenty Four out of Thirty Six military camps in the United States experienced an influenza outbreak. Thirty of the Fifty largest cities suffered from an "excess mortality" from the influenza
  • This flu virus had a high attack and mortality rate among young adults ages twenty to fifty and created a "W" shaped mortality curve as the youngest and eldest portions of the populations were at the extremes and young adults were the bulk of those infected. One of the major concerns with this strain of the influenza virus was that it caused pneumonia. The body's defenses are severely weakened which makes bacteria easier to invade and cause secondary complications.   
a-a-ron butler

Plague - Symptoms, Diagnosis, Treatment of Plague - NY Times Health Information - 0 views

  • Plague is caused by the bacteria Yersinia pestis. Rodents, such as rats, carry the disease. It is spread by their fleas.
  • People can get the plague when they are bitten by a flea that carries the plague bacteria from an infected rodent. In rare cases, you may get the disease when handling an infected animal.
  • plague lung infection called pneumonic plague can spread from human to human
  • ...14 more annotations...
  • Today, plague is rare in the United States, but it has been known to occur in parts of California, Arizona, Colorado, and New Mexico
  • in Europe, massive plague epidemics killed millions of people. Plague can still be found in Africa, Asia, and South America.
  • someone with pneumonic plague coughs, tiny droplets carrying the bacteria move through the air. Anyone who breathes in these particles may catch the disease. An epidemic may be started this way.
  • Pneumonic plague symptoms appear suddenly, typically 2 - 3 days after exposure. They include: Cough Difficulty breathing Fever Frothy, bloody sputum Pain in the chest when you breathe deeply Severe cough Septicemic plague may cause death even before its symptoms occur. Symptoms can include: Abdominal pain Bleeding due to blood clotting problems Diarrhea Fever Nausea Vomiting
  • Bubonic plague symptoms appear suddenly, usually after 2 - 5 days of exposure to the bacteria. Symptoms include: Chills Fever General ill feeling (malaise) Headache Muscle pain Seizures Smooth, painful lymph gland swelling called a bubo Commonly found in the groin, but may occur in the armpits or neck, most often at the site of the infection (bite or scratch) Pain may occur in the area before the swelling appears
  • Bubonic plague -- an infection of the lymph nodes Pneumonic plague -- an infection of the lungs Septicemic plague -- an infection of the blood
  • Tests that may be done include:
  • Blood culture Culture of lymph node aspirate (fluid taken from an affected lymph node or bubo) Sputum culture
  • People with the plague need immediate treatment. If treatment is not received within 24 hours of when the first symptoms occur, death may occur.
  • Antibiotics such as streptomycin, gentamicin, doxycycline, or ciprofloxacin are used to treat plague
  • Oxygen, intravenous fluids, and respiratory support usually are also needed.
  • Patients with pneumonic plague should be strictly isolated from caregivers and other patients. People who have had contact with anyone infected by pneumonic plague should be watched carefully and given antibiotics as a preventive measure.
  • Without treatment, about 50% of people with bubonic plague die. Almost all people with pneumonic plague die if not treated. Treatment reduces the death rate to 50%
  • Rat control and watching for the disease in the wild rodent population are the main measures used to control the risk of epidemics. A vaccination is available for high-risk workers, but its effectiveness is not clearly established
Megan Sherwin

Black death skeletons - 0 views

  • The Black Death arrived in Britain from central Asia in the autumn of 1348 and by late spring the following year it had killed six out of every 10 people in London. Such a rate of destruction would kill five million now. By extracting the DNA of the disease bacterium, Yersinia pestis, from the largest teeth in some of the skulls retrieved from the square, the scientists were able to compare the strain of bubonic plague preserved there with that which was recently responsible for killing 60 people in Madagascar. To their surprise, the 14th-century strain, the cause of the most lethal catastrophe in recorded history, was no more virulent than today's disease. The DNA codes were an almost perfect match.
  • Black death skeletons reveal pitiful life of 14th-century Londoners
  • found evidence of rickets, anaemia, bad teeth and childhood malnutrition.
Darien Fuller

About Pandemics | Flu.gov - 1 views

  • Rapid Worldwide SpreadWhen a pandemic flu virus emerges, expect it to spread around the world.You should prepare for a pandemic flu as if the entire world population is susceptible.Countries may try to delay the pandemic flu’s arrival through border closings and travel restrictions, but they cannot stop it.Overloaded Health Care Systems
  • Most people have little or no immunity to a pandemic virus. Infection and illness rates soar. A substantial percentage of the world’s population will require some form of medical care.Nations are unlikely to have the staff, facilities, equipment, and hospital beds needed to cope with the number of people who get the pandemic flu.Death rates may be high. Four factors largely determine the death toll:The number of people who become infectedThe strength of the virusThe underlying characteristics and vulnerability of affected populationsThe effectiveness of preventive measures 
katelyn dunn

CDC Smallpox | Smallpox Overview - 0 views

  • There are two clinical forms of smallpox. Variola major is the severe and most common form of smallpox, with a more extensive rash and higher fever. There are four types of variola major smallpox: ordinary (the most frequent type, accounting for 90% or more of cases); modified (mild and occurring in previously vaccinated persons); flat; and hemorrhagic (both rare and very severe). Historically, variola major has an overall fatality rate of about 30%; however, flat and hemorrhagic smallpox usually are fatal. Variola minor is a less common presentation of smallpox, and a much less severe disease, with death rates historically of 1% or less.
  •  
    Very good information about smallpox in general
  •  
    this is a great website is great for who ever has smallpox!!!
katelyn dunn

smallpox -- Britannica School - 0 views

  • Smallpox is spread by inhaling saliva or mucus droplets from an infected individual. After about 7 to 17 days, flulike symptoms begin; these include high fever, body aches, and fatigue. Within a few days a body rash develops that quickly evolves into pus-filled blisters, or pustules. By the second week the pustules form crusts, which dry out and turn into scabs. After a week or so the scabs fall off, leaving deep and often disfiguring scars. The mortality rate of smallpox is very high—up to 30 percent of its victims die from the disease. Those who do not die may suffer from complications of the disease, which include blindness, pneumonia, and kidney damage. No adequate treatment is available to fight the virus, though antibiotics may be prescribed to hinder secondary bacterial infections. The virus is remarkably stable and can exist in the environment and on bedding and clothing for extended periods of time.
    • Maddie Luna
       
      This is how you get infected with small pox
    • Maddie Luna
       
      This is also how it spreads
    • katelyn dunn
       
      this how it happens, and what it does
    • Chance Brown
       
      some important people who died of smallpox
  • Large outbreaks of smallpox have occurred throughout history, affecting individuals from all walks of life. Smallpox was responsible for the deaths of Queen Mary II of England, Emperor Joseph I of Austria, King Luis I of Spain, Tsar Peter II of Russia, Queen Ulrika Elenora of Sweden, and King Louis XV of France. Although the vaccine discovered by Jenner in 1796 was effective, it was not used consistently; by the 1950s, roughly 50 million cases of smallpox still occurred worldwide each year.
  •  
    This is a good source to know how smallpox spreads.
Madison Groves

WHO | Yellow fever - 2 views

  • Yellow fever
  • Yellow fever (YF) is a viral haemorrhagic fever transmitted by infected mosquitoes. Yellow fever can be recognized from historic texts stretching back 400 years. Infection causes a wide spectrum of disease, from mild symptoms to severe illness and death. The "yellow" in the name is explained by the jaundice that affects some patients, causing yellow eyes and yellow skin. There are three types of transmission cycle: sylvatic, intermediate and urban. All three cycles exist in Africa, but in South America, only sylvatic and urban yellow fever occur.
  • Sylvatic (or jungle) yellow fever occurs in tropical rainforests where monkeys, infected by sylvatic mosquitoes, pass the virus onto other mosquitoes that feed on them; these mosquitoes, in turn bite and infect humans entering the forest. This produces sporadic cases, the majority of which are often young men working in the forest e.g. logging. The intermediate cycle of yellow fever transmission occurs in humid or semi-humid savannahs of Africa, and can produce small-scale epidemics in rural villages. Semi-domestic mosquitoes infect both monkey and human hosts and increased contact between man and infected mosquito leads to disease. This is the most common type of outbreak seen in recent decades in Africa. Urban yellow fever results in large explosive epidemics when travellers from rural areas introduce the virus into areas with high human population density. Domestic mosquitoes, most notably Aedes aegypti, carry the virus from person to person. These outbreaks tend to spread outwards from one source to cover a wide area. Yellow fever can be prevented by vaccination. In order to protect people living in areas at high risk of yellow fever transmission, WHO's dual strategy for prevention of yellow fever epidemics relies on preventive mass immunization campaigns followed by infant routine immunization. Yellow fever causes epidemics that can affect 20% of the population. When epidemics occur in unvaccinated populations, case-fatality rates may exceed 50%. No treatment beyond supportive care exists. For more information
  • ...1 more annotation...
  • WHO fact sheet Disease Outbreak News: yellow fever International travel and health: yellow fever International Health Regulations (IHR)
  •  
    Some Good facts on how Yellow Fever is spread.
  •  
    yellow fever
jace givens

yellow fever | FactMonster.com - 0 views

  • yellow fever, acute infectious disease endemic in tropical Africa and many areas of South America. Epidemics have extended into subtropical and temperate regions during warm seasons. In 1878 a severe outbreak in the Mississippi Valley killed about 20,000; the last epidemic in the United States occurred in New Orleans in 1905. Yellow fever is caused by a virus transmitted by the bite of the female Aedes aegypti mosquito, which breeds in stagnant water near human habitations. A form of the disease called sylvan or jungle yellow fever is transmitted in tropical jungles by other species of mosquitoes that live in trees. Other primates are susceptible to the disease and function as a reservoir of the virus.
  • At the end of the 19th cent., yellow fever was highly prevalent in the Caribbean, and a way of controlling it had to be found before construction of the Panama Canal could be undertaken. In 1900 an American commission headed by Walter Reed and including James Carroll, Jesse Lazear, and ArĂ­stides Agramonte gathered in the U.S. Army's Camp Columbia in Cuba. Through their experiments—one of which severely sickened Carroll and killed Lazear—they proved the theory of C. J. Finlay that yellow fever was a mosquito-borne infection. Within the next few years, W. C. Gorgas, an army physician and sanitation expert, succeeded in controlling the disease in the Panama Canal Zone and other areas in that part of the world by mosquito-eradication measures. The later development of an immunizing vaccine (work on which won Max Theiler a Nobel Prize) and strict quarantine measures against ships, planes, and passengers coming from known or suspected yellow-fever areas further aided control of the disease.
  • Yellow fever begins suddenly after an incubation period of three to five days. In mild cases only fever and headache may be present. The severe form of the disease commences with fever, chills, bleeding into the skin, rapid heartbeat, headache, back pains, and extreme prostration. Nausea, vomiting, and constipation are common. Jaundice usually appears on the second or third day. After the third day the symptoms recede, only to return with increased severity in the final stage, during which there is a marked tendency to hemorrhage internally; the characteristic "coffee ground" vomitus contains blood. The patient then lapses into delirium and coma, often followed by death. During epidemics the fatality rate was often as high as 85%. Although the disease still occurs, it is usually confined to sporadic outbreaks.
  •  
    FACT MONSTER
katelyn dunn

Facts About Smallpox Disease - 0 views

  • Smallpox, if used as a weapon, would be a serious threat because: it is spread through the air when an infected person breathes, talks, laughs, or coughs it can also be spread by infected clothing or bed linens it can spread in any climate or season there is no treatment or cure few doctors would know smallpox if they saw it people who survive it are left with ugly scars on their bodies or face, and some become blind 30% or more of people who contract smallpox die Smallpox devastated the American population in the 1700s (see Elizabeth Fenn's book, Pox Americana, for the details). Anyone who knows about it fears it. Once a few cases were reported in the media there would be widespread concern, even pan
  • What is being done about a possible outbreak Since the last case of smallpox occurred in 1977 in Somalia, scientists have had to rely on research that was done before then, plus their best educated guesses, when trying to plan for an outbreak. Here's what we know, and what is being done:
  • 1. People vaccinated many years ago may not be immune. Vaccination gives immunity to a disease, but not forever; scientists generally agree that full immunity only lasts 3-5 years. After that, it begins to fade. A study published in 1972 showed a death rate of 11% for people vaccinated more than 20 years prior to exposure to smallpox. Scientists do know that if someone is exposed to smallpox, giving the person the vaccine within 4 days reduces the severity of the disease or even prevents him/her from getting it.
  • ...3 more annotations...
  • 2. National Smallpox Preparedness Program In December 2002 a U.S. National Smallpox Preparedness Program was initiated to protect Americans against smallpox, should it be used as a biological weapon. Smallpox Response Teams are to be formed in communities throughout the country. Teams members, including health care workers, firefighters, police, and volunteers, are vaccinated against smallpox and thus could respond to an outbreak without contracting the disease. The Department of Defense also began vaccinating military and civilian personnel deployed to high-risk areas. During January 24-December 31, 2003, smallpox vaccine was administered to 39,213 civilian health-care and public health workers throughout the U.S. More than 1 million military and support personnel have also received the smallpox vaccination since December 2002.
  • 3. CDC Smallpox Response Plan and Guidelines The CDC has developed a Smallpox Response Plan and Guidelines. The plan outlines strategies which would guide the public health response to a smallpox outbreak at the federal, state, and local levels. The CDC states that smallpox vaccine is not available for members of the general public at present. However, in the event of an outbreak, the agency states there is enough smallpox vaccine stockpiled to vaccinate every person in the United States.
  • 4. Educating health care providers about vaccination An added consideration is that training doctors and nurses how to administer smallpox vaccine properly and recognize a successful reaction to the vaccine (a sore at the injection site) will be an ongoing process. Smallpox is not given in a single shot (injection) like other vaccinations. There is a special technique used called multiple puncture vaccination. Health care providers must also teach those who are vaccinated about symptoms that may occur, and how to take care of the sore at the vaccination site.
  •  
    all things smallpoxs!!!!
1 - 15 of 15
Showing 20 items per page