What Happens to The Body When a Person is Tuberculosis?

When TB bacteria are inhaled between the lungs, they can multiply and cause a lung infection (pneumonia). The lymph nodes associated with the lungs May also be involved in infection and are generally expanded. The hilar lymph nodes (lymph nodes adjacent to the heart in the central part of the chest) are often involved.

In addition, tuberculosis can spread to other parts of the body. Immune body (defense), however, can fight infection and prevent bacteria from spreading. The immune system is ultimately by the formation of scar tissue around the TB bacteria and isolate it from the rest of the body. The tuberculosis, which occurs after a first exposure to the bacteria is often referred to as tuberculosis primary. If the body is able to form scar tissue (fibrosis) around the TB bacteria, infection is contained in an inactive state. This person generally has no symptoms and can not spread TB to others. The scar tissue and lymph May eventually harden, such as stone, because the process of calcification scars (calcium deposits in the bloodstream in the scar tissue). These scars often appear on X-ray and imaging studies such as balls are round and designated as a granuloma. If these injuries do not show evidence of calcium on x-ray, they can be difficult to distinguish from cancer.

Sometimes, however, the immune system is weakened, and the TB bacteria break the scar tissue and can cause active disease, referred to the reactivation of tuberculosis or TB secondary. For example, the immune system may be weakened by old age, the development of another infection or a cancer or certain medications such as cortisone, drugs, or drugs used to treat arthritis or inflammatory diseases of intestine. The breakthrough of bacteria can result in a recurrence of pneumonia and a spread of tuberculosis to other places in the body. The kidneys, bone and shell of the brain and spinal cord (the meninges) are the most common sites affected by the spread of tuberculosis beyond the lungs.

How to Choose a Doctor

Choosing a new doctor can be a difficult task, especially if you have moved and are living in a new community. Ask for recommendations from colleagues, neighbours and friends is a good way to start, but ultimately, you will have to decide which doctor is best suited to your individual needs and situation.

Your insurance May restrict your choices to a group plan approved by doctors or offer financial incentives to plan for the use of affiliated physicians. Always check the conditions of your insurance coverage to determine whether your plan will cover visits to the doctor you want. If he or she does not participate in your health plan, how are you going to pay out of pocket for visits to the supplier? If you changed jobs and must decide between different health plans offered by your employer, you want May to make your choice of doctor first, then choose the health plan that covers visits to the doctor.

You will also need to decide what kind of doctor you are looking for. Do you need a premier provider of health care (a doctor who will manage all your care and refer you to specialists if necessary)? Or do you need a specialist in a particular area?

Most doctors performing the USA both physicians frontline doctors (you see a doctor for ailments like a cold, flu, and regular assessments) and specialists (doctors who focus on an area that you see, for example, for a colonoscopy, rheumatoid arthritis, IBS, multiple sclerosis, cancer or other specific conditions) are board certified, meaning that they have completed residency training in a specific area After graduation from medical school and have passed an examination of skills in this area. Primary care providers board May be certified in various fields such as family medicine or internal medicine.

It is also possible to know if a doctor is in good standing with the relevant licensing through a Web site run by the directors of several medical professionals, state councils. The Web site administrators drugs can provide information on disciplinary action or criminal charges filed against doctors in many states.

Finally, May you have other concerns in choosing a doctor. These concerns should reflect your own needs and priorities The following questions can help you define what is most important to you:

• Where is the practice? Will it be easy for you to get there? Is it accessible by public transport? Is there a large terminal?

• Who hospital (s) the doctor? Are you comfortable with the possibility of being treated to one of these institutions in case of need?
• Where are routine X-rays and laboratory studies conducted? Can they do exercise, or are you going to go to a laboratory outside?

• How long should we wait for an appointment after your call? Can you be seen on the same day if you need emergency?

• Is the office staff friendly and courteous?

• If you call to a question about your care, no doctor or nurse quickly return your call?

• Who covers for the doctor when he / she is absent? Who should you call if you have a problem after hours? If the doctor works in a group, are you comfortable being seen by a partner in practice?

• What the doctor will often refer patients to specialists or he / she prefers to manage the majority of your care themselves?

• What the process office insurance claims, or do you pay in advance for services and file claims yourself?

• If you are unsure of your choice, ask if you can "interview" appointment to speak with the doctor of your concerns. You May have to pay a share or other fees for this service, but it can be a valuable means of gathering information at your decision.

Tuberculosis Skin Test

What is tuberculosis skin test?

The skin test for tuberculosis (also known as the tuberculin test or PPD) is a test used to determine if someone has developed an immune response to the bacterium that causes tuberculosis (TB). This response may occur if someone currently has tuberculosis or if they were exposed to it in the past. The skin test for tuberculosis is based on the fact that M. tuberculosis infection produces a delayed hypersensitivity skin reaction to certain elements of the bacteria. The components of the body are contained in extracts of culture and leachate are the essential elements of classical PPD tuberculin (also known as purified protein derivative). PPD This material is used for skin tests for TB. Reaction to the tuberculin skin PPD begins when specialized immune cells, called T cells, which have been sensitized by prior infection, are recruited by the immune system of the skin site where they release chemical messengers called lymphokines. These lymphokines induce induration (a hard surface with clear margins in and around the injection site) at the local level vasodilation edema, deposits of fibrin, and recruit other inflammatory cells in the region.

How is tuberculosis skin test administered?

The recommended standard test is administered by injection of 0.1 ml of 5 UT (tuberculin units) PPD in the upper layers of skin (intradermal, immediately beneath the surface of the skin) of the forearm. The use of a skin area to protect from injuries and out veins is recommended. The injection is usually done using a quarter to one-half inch, 27-gauge needle and syringe tuberculin. The PPD tuberculin is injected just below the surface of the skin. A discreet, pale elevation of the skin (a wheal) 6 to 10 mm in diameter should be produced when the injection is done correctly. This wheal or "bleb" is generally absorbed quickly. If it is recognized that the first test has been mismanaged, another test can be given at a time, selecting a site several centimeters away from the original injection.

What is the method of reading the TB skin test?

"Read" skin test means to detect a raised, thickening of the skin reaction region, called induration. Induration the key point is to detect, no redness or bruising. Skin tests should be read between 48 and 72 hours after the injection when the size of the induration is maximum. Tests read after 72 hours tend to underestimate the size of the induration.

Interpretation of test results skin

The basis for reading the skin test is the presence or absence and the amount of induration (localized swelling). The diameter of induration should be measured transversely (ie perpendicular) to the long axis of the forearm and recorded in millimeters. The area of induration (palpable, raised hardened zone) around the injection site is the reaction to tuberculin. Again, redness is not measured. A tuberculin reaction is classified as positive on the diameter of induration in collaboration with the patient, certain specific risk factors. In a healthy person who is not immunosuppressed induration greater than or equal to 15 mm is considered a positive skin test. If blisters are present (blisters), the test is also regarded as positive. In a person with a kidney disease underlying diabetes, or a healthcare worker, 10 mm induration is considered a positive skin test. 5 mm is considered a positive skin test result for patients who are immunosuppressed, such as rheumatoid arthritis and patients with Crohn's disease patients. Induration less than 2 mm, without blistering, is considered a skin test negative.

Epidemiology

Approximately one third of the world's population is infected with TB at a given moment, with approximately 2 million TB-related deaths per year worldwide.

People with HIV infection, cancer, malnutrition, chemotherapy, drug or alcohol abuse are particularly likely to develop active tuberculosis. Rates of tuberculosis and deaths are greatest in the developing world, and tuberculosis is a leading cause of death among people living with HIV. In the USA, rates of tuberculosis has increased during the early years of the HIV epidemic, but have since declined, and are in fact the lowest since have been monitoring began in 1953. However, TB still affects tens of thousands of Americans and kills hundreds each year.

Overall, infection rates are tuberculosis, and other geographic regions with high rates of infection endemic understand.

Infection in other species

Bacillus tuberculosis affects other vertebrates, in addition to humans, and can be transmitted between species, but other spcies Mycobacterium are most often contracted by non-human vertebrates. "TB in cattle was known even before the classical period ... Because of its close resemblance with the disease in humans and close relations between pathogens, they were originally known as M. tuberculosis and typus bovinus M. tuberculosis typus humans.

The elephants were diagnosed with the disease in captivity.

One of the risks of non-pasteurized milk is drinkable secretions from cows infected with bovine tuberculosis. The public health efforts opfficials to inspect the cattle were, however, resisted by milk producers in the early 20th century.

Diabetes Makes People More Vulnerable to TB

The diabetes makes a person three times more likely to develop tuberculosis, and in May it be the source of more than 10 percent of TB cases in India and China, researchers said Monday.

To clarify the link between the diseases, researchers at the Harvard School of Public Health in Boston examined data on 1.7 million people from 13 studies conducted in Canada, Mexico, the USA, Britain, Russia, Taiwan, India and South Korea.

Having raised a diabetes person likely to get active tuberculosis of the disease, regardless of geography, the researchers found, with the risk rising almost three times compared to people without diabetes, researchers wrote in the Public Library of Science journal PLoS Medicine.

"With an estimated 171 million people with diabetes, a figure expected to double by 2030, it is clear that (diabetes) is a substantial contribution to the current and future burden of tuberculosis globally" , Epidemiologist Megan Murray, who conducted the research with Harvard colleague Christie Jeon, said by e-mail from Rwanda.

There is evidence that diabetes predisposes to tuberculosis infection and impairs their ability to respond to infection, said Murray. Tuberculosis is spread from one person to another when a person with active TB coughs or sneezes.

The role of diabetes May complicate efforts to bring down prices of tuberculosis, which trails only AIDS on the list of leading causes of death among infectious diseases, the researchers said.

An estimated one third of the world's population is infected with the bacterium that causes tuberculosis, a disease that usually attacks the lungs.

To better combat tuberculosis, scientists wishing to better understand the factors May be someone who is infected with TB bacteria, but is not sick - known as the latent infection - go to develop TB disease.

AIDS has been helping drive to conquer tuberculosis, and this research also suggests that diabetes is produced by the interaction of deadly tuberculosis.

With diabetes, a blood-sugar levels are too high, which can cause damage to eyes, kidneys and nerves, as well as heart disease, stroke and limb amputation.

The results indicated May diabetes is responsible for more than 10 cases of tuberculosis in India and China, nations with the most cases of tuberculosis. "The contribution of (diabetes) the burden of TB May be even higher in countries like India and China where the incidence (of) tuberculosis is higher and the average age is lower" , "Said Murray.

TB kills about 1.7 million people a year, according to the World Health Organization. By region, Asia has the most cases of tuberculosis while Africa has the highest rate.

The results indicate global fight against tuberculosis efforts could benefit from increased attention to people with diabetes when dealing with people with latent TB infections, the researchers said.

The areas most affected are those in which the burden of (diabetes) is high and tuberculosis is still active. Those include India, areas of Latin America where (diabetes) rates are high, and specific populations as some Amerindian populations in the USA which experience high (diabetes) and incidence of tuberculosis .

TB Threat to the World of Women

The disease tuberculosis is now the leading cause of death among women, according to new research conducted by the World Health Organization.

The figures show that 900 million women worldwide are infected with the disease. This year alone, more than a million of them die and more than two times higher than the figure is infected.
The disease is often regarded as the most common among the elderly, and in industrialized countries quarter of all cases occurring in more than 65 years. But in developing countries in Africa and South America, TB is more prevalent among young adults.

Women age 15 to 44 years are more likely than men of similar age ill with the disease. The women of this age group are also at greater risk of HIV infection, making them vulnerable to tuberculosis.

The main causes of death among women aged 15 to 44 are: TB - 9%, war - 3%, HIV - 3%; heart disease 3%.

Experts on the disease met in Stockholm, Sweden, biological, social and cultural differences in the incidence of tuberculosis.

Dr. Paul Dolin of the WHO Global Tuberculosis Programme with the words: "Women, mothers and employees are slaughtered in their first and the world is not to say. But the impact on families, communities and economies is still a long Woman died. "

The disease control

The WHO strategy for tuberculosis control points east, which stands for directly observed treatment. It is on the diagnosis of tuberculosis samples of saliva, then with a professional or volunteer health workers to ensure that infected take a combination of antibiotics for a maximum of six months or until the bacterium was eradicated.

But poorly managed TB programmes often contribute to this problem. Patients are not the full course of antibiotics and take them when they feel better able to develop anti-biotic tuberculosis mutations. The drug is more expensive to heal and more likely to kill.

In March, WHO, 16 countries accused of not remove the threat of TB seriously. The country, Brazil, Indonesia, Russia, South Africa, Nigeria, Afghanistan and Pakistan.

Vitamin E May stimulate TB risk among men smokers high dose of vitamin C

New study by researchers at the University of Helsinki in Finland, found that vitamin E could increase the risk of tuberculosis among men smokers high dose of vitamin C.

In the study, Harri Hemila and Jaakko Kaprio of the University of Helsinki, Finland has found that six years, supplementation with vitamin E tuberculosis risk increased by 72 per cent for men smokers who had high dietary intake of vitamin C, vitamin E, but had no effect on who had low dietary vitamin C intake.

Previous studies have suggested that vitamin E could improve the immune system and in animal studies, it appears to protect against various infections.

The continuation of previous studies in mind, researchers conducted a study to determine whether supplementation of vitamin E may reduce the risk of tuberculosis.

They analyzed data from the randomized trial, which was conducted in Finland between 1985-1993, and included men smokers aged 50-69 years.

There were 174 cases of tuberculosis in 29023 participants for 6 years 50mg/day supplementation of vitamin E.

The effect of vitamin E on TB risk was modified by the absorption of vitamin C in food.

The results showed that vitamin E had no effect on participants who have dietary vitamin C intake of less than 90 mg / day.

However, it has also been found that vitamin E supplementation tuberculosis risk increased by 72 percent in those who have dietary vitamin C intake more than 90 mg / day.

The largest increase in tuberculosis risk by vitamin E is limited to a period of one year after the opening of supplementation.

Published by the prestigious Institute of Medicine, USA nutritional recommendations consider that vitamin E is safe in an amount less than 1000 mg / day.

However, this new study suggests that in some population groups supplementation of vitamin E could be harmful to a much lower dose, 50 mg / day.

The researchers concluded "the consumption of supplements of vitamin E by the general public should be discouraged because it is proof of harm to some people."