Tuberculosis is caused by bacteria that spread from person to person through microscopic droplets released into the air. This can happen when someone with the untreated, active form of tuberculosis coughs, speaks, sneezes, spits, laughs or sings.
Tuberculosis is caused by bacteria that spread from person to person through microscopic droplets released into the air. This can happen when someone with the untreated, active form of tuberculosis coughs, speaks, sneezes, spits, laughs or sings.
Although tuberculosis is contagious, it's not easy to catch. You're much more likely to get tuberculosis from someone you live or work with than from a stranger. Most people with active TB who've had appropriate drug treatment for at least two weeks are no longer contagious.
HIV and TB
Since the 1980s, tuberculosis cases have increased dramatically because of the spread of HIV, the virus that causes AIDS. HIV suppresses the immune system, making it difficult for the body to control TB bacteria. As a result, people with HIV are much more likely to get TB and to progress from latent to active disease than are people who aren't HIV positive.
Drug-resistant TB
Tuberculosis also remains a major killer because of the increase in drug-resistant strains. Over time, some TB germs have developed the ability to survive despite medications. This is partly because people don't take their drugs as directed or don't complete the course of treatment.
Drug-resistant strains of tuberculosis emerge when an antibiotic fails to kill all of the bacteria it targets. The surviving bacteria become resistant to that drug and often other antibiotics as well. Some TB bacteria have developed resistance to the most commonly used treatments, such as isoniazid and rifampin (Rifadin, Rimactane).
Some TB strains have also developed resistance to drugs less commonly used in TB treatment, such as the antibiotics known as fluoroquinolones, and injectable medications including amikacin and capreomycin (Capastat). These medications are often used to treat infections that are resistant to the more commonly used drugs.
Risk factors
Anyone can get tuberculosis, but certain factors can increase your risk, including:
Weakened immune system
A healthy immune system often successfully fights TB bacteria. However, several conditions and medications can weaken your immune system, including:
HIV/AIDS
Diabetes
Severe kidney disease
Certain cancers
Cancer treatment, such as chemotherapy
Drugs to prevent rejection of transplanted organs
Some drugs used to treat rheumatoid arthritis, Crohn's disease and psoriasis
Malnutrition or low body weight
Very young or advanced age
Traveling or living in certain areas
Your risk of getting tuberculosis is higher if you live in, emigrate from or travel to areas with high tuberculosis rates. Areas include:
Africa
Asia
Eastern Europe
Russia
Latin America
Other factors
Using substances. IV drugs or excessive alcohol use weakens your immune system and makes you more vulnerable to tuberculosis.
Using tobacco. Tobacco use greatly increases the risk of getting TB and dying of it.
Working in health care. Regular contact with people who are ill increases your chances of exposure to TB bacteria. Wearing a mask and frequent hand-washing greatly reduce your risk.
Living or working in a residential care facility. People who live or work in prisons,
Answers & Comments
Answer:
bacteria
Explanation:
Tuberculosis is caused by bacteria that spread from person to person through microscopic droplets released into the air. This can happen when someone with the untreated, active form of tuberculosis coughs, speaks, sneezes, spits, laughs or sings.
Answer:
Tuberculosis is caused by bacteria that spread from person to person through microscopic droplets released into the air. This can happen when someone with the untreated, active form of tuberculosis coughs, speaks, sneezes, spits, laughs or sings.
Although tuberculosis is contagious, it's not easy to catch. You're much more likely to get tuberculosis from someone you live or work with than from a stranger. Most people with active TB who've had appropriate drug treatment for at least two weeks are no longer contagious.
HIV and TB
Since the 1980s, tuberculosis cases have increased dramatically because of the spread of HIV, the virus that causes AIDS. HIV suppresses the immune system, making it difficult for the body to control TB bacteria. As a result, people with HIV are much more likely to get TB and to progress from latent to active disease than are people who aren't HIV positive.
Drug-resistant TB
Tuberculosis also remains a major killer because of the increase in drug-resistant strains. Over time, some TB germs have developed the ability to survive despite medications. This is partly because people don't take their drugs as directed or don't complete the course of treatment.
Drug-resistant strains of tuberculosis emerge when an antibiotic fails to kill all of the bacteria it targets. The surviving bacteria become resistant to that drug and often other antibiotics as well. Some TB bacteria have developed resistance to the most commonly used treatments, such as isoniazid and rifampin (Rifadin, Rimactane).
Some TB strains have also developed resistance to drugs less commonly used in TB treatment, such as the antibiotics known as fluoroquinolones, and injectable medications including amikacin and capreomycin (Capastat). These medications are often used to treat infections that are resistant to the more commonly used drugs.
Risk factors
Anyone can get tuberculosis, but certain factors can increase your risk, including:
Weakened immune system
A healthy immune system often successfully fights TB bacteria. However, several conditions and medications can weaken your immune system, including:
HIV/AIDS
Diabetes
Severe kidney disease
Certain cancers
Cancer treatment, such as chemotherapy
Drugs to prevent rejection of transplanted organs
Some drugs used to treat rheumatoid arthritis, Crohn's disease and psoriasis
Malnutrition or low body weight
Very young or advanced age
Traveling or living in certain areas
Your risk of getting tuberculosis is higher if you live in, emigrate from or travel to areas with high tuberculosis rates. Areas include:
Africa
Asia
Eastern Europe
Russia
Latin America
Other factors
Using substances. IV drugs or excessive alcohol use weakens your immune system and makes you more vulnerable to tuberculosis.
Using tobacco. Tobacco use greatly increases the risk of getting TB and dying of it.
Working in health care. Regular contact with people who are ill increases your chances of exposure to TB bacteria. Wearing a mask and frequent hand-washing greatly reduce your risk.
Living or working in a residential care facility. People who live or work in prisons,