What is biological factors of tuberculosis?

Apart from diabetes and HIV co-infection, there are many risk factors associated with TB infection and disease such as age, sex, malnutrition (biological factors), tobacco smoking, alcoholism (behavioural factors), poverty, overcrowding and poor housing (socio-economic factors)2,3,4.

How does the environment affect tuberculosis?

For centuries, TB has been linked anecdotally with environmental risk factors that go hand-in-hand with poverty: indoor air pollution, tobacco smoke, malnutrition, overcrowded living conditions, and excessive alcohol use.

What environment does tuberculosis live in?

TB bacteria can live for longer in damp and dusty rooms where there’s no fresh air. If it’s dark, the bacteria can’t get killed by sunlight. Poor living conditions and overcrowding both increase TB risk.

What cultural group is most affected by tuberculosis?

The percentage of TB cases that occur in Hispanic or Latino, Black or African American, and Asian persons is higher than expected based on the percentage of these populations in the U.S. population. In 2020, about 89% of the TB cases reported in the United States occurred among racial and ethnic minority groups.

What environmental factors that can reduce the spread of tuberculosis?

Managing your environment good ventilation: as TB can remain suspended in the air for several hours with no ventilation. natural light: UV light kills off TB bacteria. good hygiene: covering the mouth and nose when coughing or sneezing reduces the spread of TB bacteria.

How is tuberculosis affected by climate change?

The rise in extreme climatic events induces population displacement resulting in a greater number of vulnerable and risk populations of tuberculosis. It creates a conducive environment of tuberculosis transmission and development of active tuberculosis and disrupts tuberculosis diagnosis and treatment services.

What factors increase the risk of tuberculosis?

Diabetes, alcohol, malnutrition, tobacco smoke, and indoor air pollution are factors which impact a larger section of the population and accelerate progression to TB disease.

What are the risk factors and causes of tuberculosis?

The risk factors for acquiring TB include close-contact situations, alcohol and IV drug abuse, and certain diseases (for example, diabetes, cancer, and HIV) and occupations (for example, health-care workers).

What type of infection causes tuberculosis?

Tuberculosis (TB) is caused by a type of bacterium called Mycobacterium tuberculosis. It’s spread when a person with active TB disease in their lungs coughs or sneezes and someone else inhales the expelled droplets, which contain TB bacteria.

How long can tuberculosis survive in the environment?

Besides the direct transmission from an infected person to an uninfected person, the TB bacilli can also be transmitted by dust. Once coughed out by a person with TB, the bacilli can survive up to six months outside the body if they are protected from direct sunlight. Often they settle in dusty, dark areas.

What climate is best for tuberculosis?

The association between humidity and TB is strong and immediate at low humidity, but the risk decreases with increasing lag. Using the optimum weather values corresponding to the lowest risk of infection, the risk of TB is highest at low temperature, low humidity and low rainfall.

What are the economic factors of tuberculosis?

It is recognised that low socio-economic background can contribute to the increased risk of TB and unfavourable TB treatment outcomes (4–6). In sub-Saharan Africa, being single, low education, unemployment, low income, poverty, smoking, and alcohol use were shown to be associated with TB (7, 8).

What are the biological determinants of health related to tuberculosis in the United States?

The tuberculosis (TB) epidemic is strongly influenced by social and economic development and health-related risk factors such as undernutrition, diabetes, HIV infection, alcohol use disorders and smoking.

What populations are at risk for TB?

At-Risk Populations for Tuberculosis Foreign-born persons, including children, who have immigrated within the last 5 years from areas that have a high TB incidence. Residents and employees of high-risk congregate settings (prisons, nursing homes, homeless shelters, drug treatment facilities, and healthcare facilities)

What are the socio demographic impact on tuberculosis?

Conclusions. In general, males and young adults, ages 21–35, had greater awareness about transmission and prevention of TB than females and adults over 35. Individuals with higher education and urban area patients were comparatively better informed about TB infection.

How does Mycobacterium tuberculosis survive in environment?

Transmission of M tuberculosis from the environment is possible as TB bacilli have been isolated from sputum or carpet up to 19 days, wood over 88 days, and moist and dry soil up to 4 weeks following contamination. Furthermore, not only can M tuberculosis survive in soil, but it also remains virulent.

How can the community prevent TB?

  1. Who Should be Tested.
  2. Testing for TB Infection.
  3. Testing in BCG-Vaccinated Persons.
  4. TB Screening and Testing of Health Care Personnel.
  5. Testing During Pregnancy.
  6. Diagnosing latent TB infection and TB disease.

Can cold weather cause tuberculosis?

tuberculosis transmission during the winter months, particularly in the overcrowded and poorly ventilated settings. Winter weather has been linked with increased rates of morbidity and mortality of respiratory diseases (including tuberculosis).

Does a dry climate help tuberculosis?

Summary. Climate appears to have considerably less influence on tuberculosis mortality than such factors as racial immunity and social conditions; there is none the less some evidence that warm, damp climates are associated with a relatively high tuberculosis mortality.

Is tuberculosis endemic to a particular area?

TB is endemic to certain regions of the world, such as Africa, Russia, Eastern Europe, Asia, Latin America, and the Caribbean. It is these areas where one is most likely to contract the disease. Developing countries have much higher rates of TB than developed nations.

Why is it necessary to culture a TB specimen?

Positive cultures for M. tuberculosis confirm the diagnosis of TB disease; however, in the absence of a positive culture, TB disease may also be diagnosed on the basis of clinical signs and symptoms alone. Culture examinations should be done on all diagnostic specimens, regardless of AFB smear or NAA results.

What are the factors that increase the risk of infection?

The risk of infection increases when large numbers of people are in a small space for a long time. In addition, sharing glasses and chopsticks increases the risk of infection. Long-term meals, dinner receptions, drinking alcohol at night increase the risk of infection compared to a short meal.

What are 5 causes of tuberculosis?

  • Poverty.
  • HIV infection.
  • Homelessness.
  • Being in jail or prison (where close contact can spread infection)
  • Substance abuse.
  • Taking medication that weakens the immune system.
  • Kidney disease and diabetes.
  • Organ transplants.

How does poverty and inequality affect the spread of tuberculosis?

> Poor nutrition and an inadequate diet weaken the immune system and increase the chances of infection and developing active TB. > Overcrowded and poorly ventilated home and work environments make TB transmission more likely.

What are the two main types of tuberculosis?

  • Latent TB. You have the germs in your body, but your immune system keeps them from spreading. You don’t have any symptoms, and you’re not contagious.
  • Active TB. The germs multiply and make you sick. You can spread the disease to others.
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