Tuberculosis Is An Infectious Disease - 1217 Words

World Health Organization estimated one-third of the world’s population is suffering with this disease at present even though there is vaccine widely available, there is still a high morbidity rate in some countries every year. Africa, Western and Southeast Asia are the most affected areas, making approximately 86 percent of tuberculosis cases in the world. This research paper will discuss, tuberculosis in New Zealand. It will discuss the biology of the bacterium, risks factors and the importance of immunisation and prevention. Tuberculosis is an infectious disease caused by a bacterium called Mycobacterium tuberculosis (Marieb, 2012). Tuberculosis is a contagious infection that begins in the lungs and spread to other organs in the body including the kidneys, brain and bones. Tuberculosis is spread by inhaling airborne droplets from an infected person. These airborne particles are spread when the infected person sneezes, coughs or laughs. Tuberculosis cannot be spread, by contact. Tuberculosis is caused by a rod shaped bacterium or bacillus called Mycobacterium tuberculosis. These droplets are discharged into the air by a person with active tuberculosis (Britannica, 2012). The spreading progress is very effective. These droplets can remain in the air for several hours in addition it only needs ten bacilli to start an infection. When the infected air is breathed in, the bacilli enter the lungs through the bronchioles and into the alveoli. The bacilli then infect the alveoliShow MoreRelatedTuberculosis As An Infectious Disease1515 Words   |  7 PagesINFECTIOUS DISEASE: TUBERCULOSIS Tuberculosis is one of the leading infectious diseases around the world. Globally, infectious diseases like tuberculosis among others continue to be one of the leading causes of death in children, adolescents and of the leading causes in adults (WHO). The purpose of this article is to examine and discuss mostly the etiology of tuberculosis, as well as its cause and spread. To better understand the subject of tuberculosis as an infectious disease and the problem itRead MoreTuberculosis As A Infectious Disease1339 Words   |  6 PagesTuberculosis (TB) is a highly infectious disease that can harm any organ of the body, especially the lungs. Every year about over a million people die due to tuberculosis and even more are infected. A person in contact with an infected individual can easily put themselves at risks of getting TB. Due to the emergence of human immunodeficiency virus (HIV), tuberculosis infections commenced to increment more rapidly. A person with HIV has an impotent immun e system which is not able to fight infectionsRead MoreTuberculosis : A Infectious Disease Essay1685 Words   |  7 PagesTuberculosis; often referred to as the silent killer, is a highly infectious disease that is contracted annually by 9.3 million individuals globally, and causes 1.8 million deaths. It’s high mortality rate led to the formation of the American Lung Association in the United States in 1904, after it was declared the leading cause of death during the nineteenth century and early twentieth century. The origin of tuberculosis is not certain; the first documented deaths were recorded in ancient Egypt andRead MoreTuberculosis Is The Infectious Disease923 Words   |  4 Pages Tuberculosis is the infectious disease, that cause mortality worldwide and is the actual issue for worldwide health system. Tuberculosis (TB) is a communicable disease, that may presented in an active or a latent form. It affects a various body systems, but mostly a respiratory system. This disease is triggered by the bacterium Mycobacterium tuberculosis. It is transmitted through the air; therefore, a person gets infected by an inhaled bacterium from a person with active form of TB, and who isRead MoreTuberculosis : An Infectious Disease1399 Words   |  6 PagesInfectious diseases can attack the human body in many forms and varieties. Tuberculosis is one type of these infectious diseases that is a bacterial infection which spreads throughout the lymph nodes and within the bloodstream enabling it to affect all organs in the human body, commonly termed TB. TB is caused by the members of the Mycobacterium tuberculosis complex. The M. tuberculosis complex includes the species M. africanum, M. bovis, M. canettii, M. microti and M. tuberculosis, these can beRead MoreTuberculosis : An Infectious Disease Essa y2029 Words   |  9 PagesTuberculosis, also known as (TB) has been around for decades and is still active across the globe. It was a huge threat to Europe and America in The 19th century. Tuberculosis is an infectious disease caused by the bacteria Mycobacterium tuberculosis. An individual can become infected with the disease while breathing in the bacteria that is spread through the air droplets when a person coughs or speaks. TB mainly affects the lungs, however, it can attack other organs also. Tuberculosis can be fatalRead MoreTuberculosis Is An Infectious Disease Essay1230 Words   |  5 PagesMinistries of Health, states there is still an increase of number of cases of tuberculosis diagnosed each year in New Zealand, approximately 300 cases. Tuberculosis is known to be one of the oldest disease among humans and today is one of the leading causes infection and death in adults. According to the World Health Organization (WHO, 2016) about one-third of the world’s popul ation is suffering with this disease at present even though there are vaccine widely available. Though there is still a highRead MoreTuberculosis As An Infectious Disease1033 Words   |  5 PagesIntroduction Tuberculosis is an infectious disease that has afflicted individuals from the Old World for several thousands of years. This has been well documented in the archaeological record. However, the origins and development of tuberculosis in the New World have been the subject of multiple controversies. These controversies have stemmed from the discussion of whether or not Europeans introduced tuberculosis to the Americas. Evidence from South America has clearly shown that tuberculosis was presentRead MoreTuberculosis As A Infectious Disease1329 Words   |  6 PagesTuberculosis Tuberculosis (TB) is a highly infectious disease that can harm any organ of the body, especially the lungs. Every year about over a million people die due to tuberculosis and even more are infected. A person in contact with an infected individual can easily put themselves at risks of getting TB. Due to the emergence of human immunodeficiency virus (HIV), tuberculosis infections began to increase more rapidly. A person with HIV has a weak immune system which is not able to fight infectionsRead MoreTuberculosis : An Infectious Disease931 Words   |  4 PagesEven though the idea of tuberculosis being hereditarily was present, tuberculosis was still agreed to be an infectious disease at this time. Tuberculosis, as many other bacterial infections, needs a host. The bacterium is not found outside of the animal’s body. The main way that tuberculosis, and many other bacteria-caused diseases spread is through sputum. It is estimated that â€Å"a fairly well advanced consumptive spit s out from one and a half to four and a third billion bacilli in twenty-four hours†

The British s Involvement During The 1947-1948 War Of...

Chenika Bukes Over 20,000 people were murdered during the 1947-1948 War of Independence. The British s involvement in the conflict during the 1910 s-1940 s is responsible for those deaths through a narrative of events in the upcoming years to the war. The British fuelled the Arab-Israeli conflict by antagonising the Palestinian Arabs, by sentencing the Jewish people to death and by beginning the 1947-1948 Mandatory Palestine war of independence. The Arab-Israeli conflict roughly began with minor disagreements and altercations since the late 19th century up until present day. Whenever the British got involved in the conflict, something seemed to go wrong. The Arabs were antagonised by the British when the McMahon agreement was not seen through. The White paper, commissioned by the British, created a death sentence for the Jewish people- Dr.Weizmann (1939, June), and when the British withdrew from the conflict a series of events led to the 1947-1948 war of independence. The McMahon Agreement was constituted on the 24th of October 1915 between the Meccans and the British. Upon the rise of Arab nationalism, the Arabs (Meccans) pursued independence from the Ottoman Empire. Amir Abdullah, son of Hussein Bin Ali the Sharif of Mecca, visited the British general consul in Egypt in February of 1914. His incentive was to verify that the British will recognise Arab independence if they support the British in war with purpose to abdicate the Ottoman Turks. Then in 1917 theShow MoreRelatedArab Israeli Conflict 883 Words   |  4 Pagesessentially a dispute over the area known up until 1948 as Palestine, which is considered holy to all three major monotheistic religions.2 The primary parties in the conflict are Israeli (formerly Zionist) Jews and Palestinian Arabs (who are predominately Muslim).3 It is one of the unresolved problems bequeathed to the region by the British and French imperialist powers following the division of the Ottoman Empire between them at the end of World War 1.4 There are many features of the Middle East,Read MoreThe During World War II1567 Words   |  7 PagesDuring World War II, Singapore was conquered and occupied by the Japanese Empire from 1942 to 1945. British Military Administration was formed to govern the island until March 1946. Much of the infrastructure had been destroyed during the war, including electricity and water supply systems, telephone services, as well as the harbor facilities at the Port of Singapore. There was also a shortage of food leading to malnutrition, disease, and rampant crime and violence. High food prices, unemploymentRead MoreThe Creation Of Israel By John F. Kennedy1990 Words   |  8 PagesImmigrants, and World War II. â€Å"In the 1920’s, The League of Nations established a mandate for Great Britain in Palestine† (Benson). This means that Great Britain serves as the ruling power of Palestine. A few years later, Jewish Immigrants began to immigrate to Palest ine because of the mass discrimination they faced around the world (Benson). This later became a problem because both Jews and Arabs were fighting for the same land and the leaders both longed for power. â€Å"Later in the 1930’s, many Jews beganRead MoreThe Palestinian And Palestinian State3134 Words   |  13 Pages 4 Introduction 5 Israel and Palestine Early Affairs 6 UN Involvement 10 US and UK Government Relations 12 Conclusion Read MoreGlobal Effects Of The Cold War1311 Words   |  6 PagesAmanda Fuchs The Global Effects of the Cold War and Decolonization The Cold War, also known as what could have been the third world war, conquered the second half of the 20th century. This international crisis, beginning at the end of World War II, is defined as the period of tension between the United States and the Soviet Union. There are numerous reasons as to why many believed the Cold War commenced, one being that the Soviet Union wanted to spread its belief of communism worldwide, which inRead MoreQuaid E Azam7455 Words   |  30 PagesGovernor-General of Pakistan In office August 15, 1947 – September 11, 1948 Monarch George VI Prime Minister Liaquat Ali Khan Preceded by The Earl Mountbatten of Burma (as Viceroy of India) Succeeded by Khwaja Nazimuddin 1st Speaker of the National Assembly of Pakistan In office August 11, 1947 – September 11, 1948 Preceded by None Succeeded by Maulvi Tamizuddin Khan Born December 25, 1876 Karachi, Bombay Presidency, British India Died September 11, 1948 (aged 71) Karachi, Dominion of Pakistan EthnicityRead MoreThe Asian African Conference Of 19551250 Words   |  5 PagesAmerica s role in the project was, both as a regional bloc, and from the point of view of individual actors. It will bring nuance to the ways in which it was being conceived by the West, by the Third World, and by Latin Americans. I argue that Latin America’s engagement with the Third World Project followed multiple paths, intersecting with constituent groups within the broader collective tide of the Third World Project. The setting of this dissertation takes place during the Cold War, which isRead MoreIndi A Very Respectful Man And An Intellectual Leader1780 Words   |  8 Pagesis that many of Sardar Vallabhai Patel s actions greatly motivated individuals to aid India to overcome some of its struggles during and after India s independence; especially, by leading in protests such as the 1917 No Tax campaign, his achievement of uniting over five hundred Princely States after India had won independence, and his duties as Home Minister (1946) and Deputy Prime Minister (1947) of India, alongside with his involvement in India’s 1950’s Constitution. Resembling many importantRead MoreThe Arab Israeli Conflict And Arab Palestinian Conflict3221 Words   |  13 Pagesmany historical events in the development of Islam. This struggle between the two religions led to a battle for attaining sovereignty in the Middle East. The tension between the two peoples eventually escalated into the Israeli–Palestinian conflict in 1947, which in turn evolved and developed into the broader  Arab-Israeli conflict. To fully understand the viewpoints of both sides of this conflict and the history that comes with it, it is necessary to know the movements that are at the root of all theRead More20th Century Somalia1656 Words   |  7 Pagesformer British Protectorate of Somaliland and Italy’s former Trust Territory of Somalia. Somalia’s modern history began in the late 1800’s, when European powers began to trade and settle in the Somalia area. These events and the events that occurred during the 20th century helped shape the modern Somalia government and culture today. In 1886, the British gained control over northern Somalia through treaties by guaranteeing British protection to Somali chiefs who agreed to them. The British were

Biology Gcse Revision free essay sample

Small living organisms; there are 3 types * Bacteria – ecoli, salmonella * Fungi – mushrooms, athletes foot * Virus – influenza (flu), HIV * When they enter our body, they multiply and release toxins / harmful chemicals into our blood * They duplicate every 20 minutes Physical barriers: eyelashes prevent MO’s from entering through our eyes, nasal hairs reduce them, skin is a barrier to them (although they can enter through cuts), chemicals in tears and sweat, acid in the stomach kills most MO’s * Also called pathogens (microorganisms that cause disease) * Our body provides MO’s with ideal conditions to multiply in (warm and moist) The immune system: * All white blood cells are part of this system * Phagocyte – a type of white blood cell that will eliminate the virus by engulfing then digesting the bacteria, the process of this is called phagocytosis. Lymphocyte – a type of white blood cell that carry antibodies * Antigen  œ certain chemicals that are foreign to the body in pathogens * E. We will write a custom essay sample on Biology Gcse Revision or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page g. : 1. James is infected by some bacteria that cause a disease. 2. The bacteria reproduce and produce toxins that make James ill 3. A white blood cell detects the bacteria and it makes antibodies to attach to it. Other white blood cells engulf the labelled bacteria and destroy them 4. The white blood cells that produce the right antibodies reproduce meaning there are lots of them making antibodies 5. Most of the white blood cells that make this antibody die, but there are few that stay in the blood called memory cells 6. The bacteria are killed and James gets better 7. He is then infected by the same bacteria 8. The memory cells that stayed in James’ blood from last time respond quickly and kill the bacteria before he becomes ill * Memory cell – a type of white blood cell that stay in the blood after the infection has been fought off * They respond quickly when it meets a microorganism for the econd time and produce the right antibody for the particular microorganism and destroy it before you feel unwell meaning you become immune to a disease. Vaccinations: * Vaccination involves exposing the body’s immune system to a dead or inactive version of the pathogen in order to stimulate white blood cells to produce antibodies for a disease or group of diseases * People can be immunised against a pathogen through vaccination. Different vaccines are needed for different pathogens * The vaccine contains only a weakened or harmless version of a pathogen, which means that the vaccinated person is in no danger of developing the disease * Epidemic – a widespread occurrence of an infectious disease in a community at a particular time * To prevent epidemics a large percentage of the population needs to be vaccinated Antimicrobials: Chemicals that inhibit the growth of MO’s or kill them, but don’t kill viruses * Antibiotics – type of antimicrobial that kill bacteria but don’t kill viruses * MO’s can sometimes become resistant to antimicrobials (leads to a gene for resistance being passed down to offspring) * Antibiotic resistance – when some of the bacteria are resistant to the antibiotics, this can be slowed down by finishing the course and only taking them when needed * The main steps in the development of resistance are: 1. Random changes or mutations occur in th e genes of individual bacterial cells 2. Some mutations protect the bacterial cell from the effects of the antibiotic 3. Bacteria without the mutation die or cannot reproduce with the antibiotic present 4. The resistant bacteria are able to reproduce with less competition from normal bacterial strains * Mutations in bacteria can result in them becoming resistant to antibiotics, turning the bacteria into a ‘superbug’ * MRSA is a superbug resistant to almost all antibiotics Clinical trials: * When a new drug is tested on humans to find out whether or not it is afe and if it works * Groups are chosen at random to make sure that the results of the study are reliable * The control group is the group that will be given the same drug again, or a placebo * Placebo – a ‘fake’ drug in the form of a medicine that doesn’t do anything, it just dissolves in your system * In some trials where patients are seriously ill, placebos aren’t used because it is unethical not to allow them to get the potential benefits of the new drug * Blind trial – patients don’t know if they’ve been given a drug or placebo because a patient who knows they are being treated might feel better for psychological reasons even if there hasn’t been any improvement * Double-blind trial – as well as the patients, the scientists carrying out the research also don’t find out until the end which patients were given real drugs/placebos * Open-label trials – the patients and the scientists are both aware of the treatments that have been used because they can’t be masked, e. g. if one is a drug and the other is exercise Circulatory system: * Blood is circulated around the body in tubes called blood vessels * Oxygen and nutrients are carried in the blood to the body cells and waste substances (e. g. arbon dioxide) are carried away from the cells * Cell – a basic unit of life * The heart is a pumping organ that keeps the blood flowing through the vessels * The heart is a double pump * The right side pumps deoxygenated blood to the lungs to collect oxygen and remove carbon dioxide * The left pumps oxygenated blood around the body * Aorta – biggest artery in the body * Coronary arteries – branch from the aorta and provide the heart with oxygen, blood and nutrients * Lumen – the inside space of a vessel Blood vessel| Structure and adaptation| Arteries| * Carry blood away from the heart to the body cells * The blood comes out of the heart at a high pressure so the artery walls ave to be thick, strong and elastic| Veins| * Carry blood back to the heart * The blood is at a lower pressure so the walls are thinner * The lumen is bigger than arteries so the blood can flow more easily * The valves keep the blood flowing in the right direction| capillaries| * Carry blood really close to every cell in the body to exchange substances (the walls are permeable to substances diffuse in and out) * Branches of very small arteries (a microscope is needed to see them) * Supply nutrients and oxygen and remove wastes (e. g. carbon dioxide) * Walls are only one cell thick which increases the rate of diffusion| Heart rate / blood pressure: Blood needs to be under pressure to be able to travel around our body * The pressure is kept up by the heart continuously pumping * Heart rate – number of times the heart beats in one minute * Pulse rate  œ number of times an artery pulsates in one minute * The pulsation of an artery is caused by blood being pumped through it by a heart beat * When the heart muscle contracts, blood is forced out of the heart and increases blood pressure * When the heart muscle relaxes, the heart fills with blood and blood pressure decreases * Blood pressure measurements – e. g. 135/85 the higher value is the pressure when the heart contracts and the lower value is when it relaxes * Normal / average blood pressure – 80-110/60-80 * Normal / average heart rate – 60-100bpm High blood pressure increases the risk of heart disease * High blood pressure can damage the smooth and unbroken lining of an artery * Fatty deposits can build up in these damaged areas and they restrict blood flow, increasing the blood pressure to increase * If a fatty deposit breaks through the inner lining of an artery, a blood clot can form around it which could completely block the artery * If a coronary artery becomes completely blocked, an area of the heart muscle will be totally cut off from its blood supply, receiving no oxygen – this causes a heart attack * A heart attack can cause serious damage to the heart or cause death of the heart muscle Heart disease: * Heart disease can be caused by genes but is often linked to lifestyle factors * Poor diet – cholesterol makes up a large part of fatty deposits increasing blood cholesterol which increases the risk of heart disease, food with a lot of salt increases blood pressure * Smoking – carbon monoxide reduces how much oxygen the blood can transport and nicotine increases heart rate * Stress – increases blood pressure Drugs – ecstasy and cannabis increase heart rate which increases blood pressure * Excessive alcohol – increases blood pressure * Regular moderate exercise reduces the risk of developing heart disease * Heart disease is more common in industrialised countries (e. g. UK and USA) because they can afford high fat food and don’t need to be very active because they can afford cars, etc Epidemiological studies: * Epidemiology is the study of patterns of diseases and the factors that affect them * Lifestyle factors – studying a group of people who all died from heart disease to look for similarities in their lifestyle that may be linked to heart disease, e. g. hey were all smokers or they had poor diets * Genetic studies – studying the genetic makeup of a large group of people and looking out for genetic similarities between the people who affected by heart disease Homeostasis: * Balancing inputs with outputs to maintain a constant internal environment * Body temperature and water levels are both kept constant * The environment is constantly ch anging so the conditions inside the body need to be kept steady in order for cells to function properly * Automatic control systems maintain body temperature and water levels * The three main parts to maintaining homeostasis are: 1. The receptors – detect a change in the environment 2. Processing centres – receive information and determine how the body systems respond 3. Effectors – produce the response * Negative feedback – information that causes a reversal in a control system, e. g. when we get too hot our body responds by bringing our temperature back to normal (37 degrees) * Vasodilation – when blood vessels become wider and closer to the skins surface * When body temperature goes over 37 degrees, it is detected by the receptors and a message is sent to the processing centre in the brain (hypothalamus). The effectors produce the response and the blood vessels vasodilate so that heat is lost and temperature drops. The vessels then return to their normal diameter. The kidneys maintain levels of water, urea, salts and other chemicals in the blood * Urea comes from broken down proteins and needs to be excreted because it has poisonous chemicals that can get into the blood stream * Inputs – water can be gained from drinks, food an d respiration * Outputs – water can be lost through sweating, breathing and in faeces and urine * The kidneys balance water levels by producing dilute or concentrated urine * Blood plasma – the liquid that carries blood cells and dissolved substances * The concentration of urine depends on the concentration of blood plasma (which varies with external temperature, exercise levels and the intake of fluids and salt) External temperature| Exercise | Intake of fluids and salts| * Sweat contains water so sweating causes water loss * When it’s hot, the kidneys reabsorb more water back into the blood * A small amount of concentrated urine will be produced| * Exercise makes you hotter so you sweat to cool down * Same effect as heat produced * Small volume of concentrated urine| * Not drinking enough water or eating too much salt will produce concentrated urine * Drinking lots of water will produce lots of dilute urine| * The concentration of urine is controlled by a hormone called ADH (anti-diuretic hormone) * The pituitary gland releases ADH into the bloodstream * The process of water content regulation is controlled by negative feedback When the concentration of blood plasma falls†¦| When the concentration of blood plasma rises†¦| The pituitary gland secretes†¦| Less ADH| More ADH| The kidneys reabsorb†¦| Less water| More water| The urine volume†¦| Increases| Decrease s| The urine concentration†¦| Decreases| Increases| 1. A receptor in the brain detects that the water content is too high 2. The processing centre in the brain receives the information and coordinates a response 3. The pituitary gland releases less ADH so the kidneys reabsorb less water Or 1. A receptor in the brain detects that the water content is too low 2. The processing centre in the brain receives the information and coordinates a response 3. The pituitary gland releases more ADH so the kidneys reabsorb more water * ADH production can be affected by drugs * Alcohol suppresses (restrains or forcibly stops) ADH production so the kidneys will reabsorb less water * Drinking alcohol can result in a larger amount of more dilute urine being produced * More water passes out of the body as urine which can cause dehydration * Ecstasy is an illegal recreational drug * Taking it can result in a smaller amount of more concentrated urine being produced * Ecstasy causes the production of ADH to increase so the kidneys will reabsorb more water * Less water passes out of the body as urine

marry Essays - Salem Witch Trials, Mary Eastey, Rebecca Nurse, Towne

Mary Easty, a wealthy mother of seven, was shockingly accused of witchcraft in the infamous Salem Witch Trials. Mass hysteria broke out when Easty, the sister of Rebecca Nurse, was accused of witchcraft. ?Considering the assumption that witchcraft was hereditary, Mary (Towne) Easty was certain to be accused of witchcraft after her sister, Rebecca (Towne) Nurse, was condemned for her unwavering appeal of innocence? (Austin). The Salem Witch Trials were not the greatest part of history, but they mark a knowing for the unknown in the particular situation. Those who were affected were women of the elder age, town crazies, those with a not so clean reputation, and those who resisted against the church and government. The Salem Witch Trials are almost, yet not quite, on the same levels as the Holocaust of World War Two. Easty was clearly innocent of this absurdity, she was wealthy, religious and fit the strict Puritan mold. It is believed that Mary Easty was accused due to jealousy of land and wealth. (Salem Witch Trials - The People - Mary Easty - DiscoverySchool.com) The Easty family had valuable land in Salem Village which made many greedy families, such as the Putnams, want their land. In this case, Putnam didn?t accuse Mrs. Easty, unlike Sarah Osborne?s case, where the Putnams were the main accusers. The Putnam?s seemed to play in the ignorance now known as the Salem Witch Trials. The Easty family was popular by default due to all of the land they own. ?As land became scar...