Tuberculosis (TB) is an infection that can attack any part of the body, but it is normally found in the lungs (Huether, McCance, Brashers and Rote, 2008,). TB is an infection caused by a acid-fast bacillus also know as Mycobacterium tuberculosis (Huether et al. 2008) It is one of the leading causes of death in Asia, China, Indian, Indonesia and Pakistan (Huether et al. 2008). These countries show that in most cases the incidence rate is highest in young adults, and are usually the result from re-infection in recent infections. The spread of TB is attributed to the emigration of infected people from high-prevalent countries, substance abuse, poverty, transmission in crowd places, and the lack of proper medical care for the infected individuals (Huether et al. 2008).
Tuberculosis is transmitted from person to person through airborne droplets, when a person that is infected with TB coughs, sneezes, talks, and/or sings letting tiny droplet to be released into the air(Bare, Smeltzer, Hinkle, and Cheever, 2008). TB cannot be spread through touching inanimate objects, food, or drinks (Bare et al. 2008). The person must be in the same area an affected individual is in and inspirate the droplets to be affected. Once the bacillus is inspired into the lungs, the bacilli start to multiply causing lung inflammation also known as nonspecific pneumontis (Huether et al. 2008). To cause an immune response the bacilli will travel through lymphatic system and become lodged in the lymph nodes (Huether et al. 2008). Lung inflammation causes the activation of the alveolar macrophages and neutrophils (Huether et al. 2008). Granulomas, new tissue masses of live and dead bacilli, are surrounded by macrophages, which form a protective wall. They then transform into a fibrous tissue mass, the central portion is called a ghon tubercle (Bare et al. 2008). The bacterial then necrotic, forming a cheesy mass, this mass may become calcified and form a collagenous scar (Bare et al. 2008). At this point, the bacteria becomes dormant and there is no further progression of the active disease. The disease can become active again by re-infection or activation of the dormant bacteria (Bare et al. 2008).
TB can be classified as latent or active (Bare et al. 2008). TB that is a latent is bacilli that are isolated with a tubercle can remain, dormant, causing no symptoms. Active TB occurs when live bacilli escape into the bronchi or if the immune system is weaken by diseases such as HIV or Cancer (Bare et al.
The immunologic events that are happening at the local level during Carlton's acute inflammatory response would be:
Also contributing to the virulence of the bacteria are the exotoxins including invasive adenylate cyclase, tracheal cytotoxin, and lethal toxin. Invasive adenylate cyclase reduces local phagocytic activity as well as acting as a hemolysin. Tracheal toxin affects the ciliated respiratory epithelium by inhibiting the ciliary beating. This kills the cells and causes them to be eliminated from the mucosa. Tracheal toxin also stimulates the release of IL-1, which causes fever. Lastly, lethal toxin causes inflammation and local necrosis at infection sites.
Tuberculosis is marked by symptoms such as a hollow cough, an emaciated body, nightly weats and daily intermittent fevers. Tuberculosis was common amongst working classes because it was contracted through pestilent, infected air, manifesting itself in places surrounded by swampy land. Geography plays an important role in the transmission of tuberculosis. The working classes could not afford to live in areas that were free of the epidemic. The upper classes did contract consumption, although they sought the medicine of the day which often brought them to health. The most popular remedy was a sea voyage in a warm climate, but also pure air and the most nutritious food were encouraged. Accordi...
Signs and Symptoms of Active Tuberculosis Mycobacterium tuberculosis (MT) is a slender, rod-shaped, aerobic bacillus which causes tuberculosis. Tuberculosis (TB) is an airborn infection which is transmitted via inhaling droplet nuclei circulating in the air. These droplets are expelled from the respiratory secretion of people who have active TB through coughing, sneezing, and talking (Porth, 2011). Some bacilli stay in the upper airway and are swept out by mucus-secreting goblet cells and cilia on the surface of the airway.
Person, A. & Mintz, M., (2006), Anatomy and Physiology of the Respiratory Tract, Disorders of the Respiratory Tract, pp. 11-17, New Jersey: Human Press Inc.
Hepatitis is the inflammation or swelling of the liver. The inflammation can happen from different injuries or viral forms of a disease. People who experience hepatitis have the symptoms of malaise, nausea, vomiting, loss of appetite, fever and jaundice. There are six known forms of Hepatitis which are Hepatitis A, Hepatitis B, Hepatitis C, Hepatitis D, Hepatitis E and Hepatitis G. The presence of hepatitis in the body can be very risky and cause severe death if not taken care of. Hepatitis is a severe issue that affect many people around the world like third world countries and cross contamination can occur mainly in health care places due to the exposure of patients with the disease and accidents handling blood or instruments, Hepatitis A,B,C,D,E and G are distinct diseases that differ in transmission and vaccines to prevent them or cure them.
Tuberculosis is an air-borne disease, hence, it can be passed from an infected person to a healthy individual through coughing, sneezing and other salivary secretions. Tuberculosis is caused by the transfer of Mycobacteriun Tuberculosis (M. Tuberculosis) also known as Tubercle Bacillus, a small particle of 1-5 microns in diameter, due to the small size, when an infected person sneezes or coughs, about 3,000 particles are expelled. M. Tuberculosis responsible for tuberculosis is able to stay in the air for a long period of time (about 6hoursAnother way of acquiring Tuberculosis is by drinking unpasteurized milk, milk straight from cow, although this is not a common mode of transmission, it can be found in rural areas. Ingestion of contaminated cow milk transmits Mycobacterium Bovis, the animal form which is still potent enough to cause tuberculosis in humans. ). Tuberculosis transmission is affected by exposure, socioeconomic status of person, proximity, immune status of uninfected individual (%&&%&? CDC).
Malaria (also called biduoterian fever, blackwater fever, falciparum malaria, plasmodium, Quartan malaria, and tertian malaria) is one of the most infectious and most common diseases in the world. This serious, sometimes-fatal disease is caused by a parasite that is carried by a certain species of mosquito called the Anopheles. It claims more lives every year than any other transmissible disease except tuberculosis. Every year, five hundred million adults and children (around nine percent of the world’s population) contract the disease and of these, one hundred million people die. Children are more susceptible to the disease than adults, and in Africa, where ninety percent of the world’s cases occur and where eighty percent of the cases are treated at home, one in twenty children die of the disease before they reach the age of five. Pregnant women are also more vulnerable to disease and in certain parts of Africa, they are four times as likely to contract the disease and only half as likely to survive it.
Tuberculosis is transmitted by inhalation of aerosols containing the tubercle bacilli. The required inoculum size for infection is usually high, but easily occurs with exposure to a patient who is currently infected. The products of dried aerosols, droplet nuclei, are particularly infectious because they remain in the air for an extended time, and upon inhalation easily move to the alveoli. The severe damage related to infection is caused by the reaction of the host. The tuberculosis infection has two phases, primary and secondary.
Wines, M. 2007. Virulent TB in South Africa may imperil millions. New York Time. January 8. Accessed online at http://www.nytimes.com/2007/01/28/world/africa/28tuberculosis.html?pagewanted=all
Being all members of the human race surely we have all sympathized for the less fortunate; whether it was for what they had or what they didn’t. There is a condition that most have never considered, and probably have never heard of. Imagine big white and red spots that decorate every part of your body so that they can’t be hidden. On the inside you have a painful sinus infection and after a while a loss of peripheral nerve sensation so bad that your hands and feet go numb. You could go blind or you could loose your nose, ears, or even legs to amputation. Unfortunately the physical ailments are the best part. Throughout history leprosy sufferers have been cast off from society with as much concern that dead bodies are sent to graves.
The disease can be caused by different mycobacterium such as Mycobacterium bovis, M. africanum, M. canettii, M. microti, and most commonly, M. tuberculosis; although the five are highly similar and are together termed the Mycobacterium tuberculosis complex (MTBC). Recently, two additional organisms. Mycobacterium pinnipedii and Mycobacterium caprae have also been implicated with the disease in humans. 6, 7 Members of the MTBC are gram-positive, long, rod-shaped bacterium with unique characteristics such as an exceptionally slow growth rate and a high content of lipids in their cell wall which provide protection against degradation and may account for their persistent survival in the environment even after the death of a host. 8
Phagocytosis acts a second line of protection. According to Tortora, Funke & Case phase one, in the phases of phagocytosis, is chemotaxis and adherence of microbe to phagocyte. Phase two, is the ingestion of microbe by phagocyte. Phase three, is the formation of a phagosome. Phase four, is the fusion of the phagosome with a lysosome to form a phagolysosome. Phase five, is the digestion of ingested microbe by enzymes. Phase six, is the formation of residual body containing indigestible material. Phase seven, is the discharge of waste materials. Granulocytes and agranulocytes are both phagocytes. Granulocytes consist of neutrophils, basophils and eosinophils, which has visible granules inside the cytoplasm. Agranulocytes have granules in the interior of their cytoplasm, but they are not visible under the light microscope after the
The disease, cholera, is an infection of the intestines, caused by the bacterium Vibrio cholerae. As stated in Microbes and Infections of the Gut, the bacterium is “a Gram-negative, comma- shaped, highly motile organism with a single terminal flagellum” (105). Cholera is characterized by the most significant symptom that presents with the disease, diarrhea, and victims can lose up to twenty liters of body fluids in a day. Cholera can be a serious disease, due to the serious dehydration that can occur, but it is only fatal if treatment is not administered as soon as possible. This research paper includes information on the causes of cholera, symptoms, ways of treatment, studies of treatments, complications that may occur, the tests and diagnosis for cholera, and finally, the ways the cholera bacterium may be transmitted.
Tuberculosis has plagued mankind for a long time. This disease, which was previously believed to be eradicated, has once again shown up and begun attacking the lives of many humans. Tuberculosis infects a third of the population and kills a fraction of them. Many approaches have been used including different varieties of infection control, bodily defenses, and treatments to try to protect humans from tuberculosis. The best way to prevent tuberculosis infections is to contain the source of tuberculosis. The most common source of tuberculosis infection is from infected humans. By diagnosing, containing, and treating people with latent tuberculosis before they get active, contagious tuberculosis, tuberculosis can be quickly contained. Once someone has been diagnosed with TB, they should be placed under isolation.