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Latent TB

Early treatment means you feel better sooner. It also reduces the risk of any long-term damage to the body and helps stop the spread of TB.

The symptoms of TB can appear slowly and you may not have all of them. Always see a doctor if you are worried. And remember, TB is curable and treatment is free for everyone in the UK.

Tuberculosis (TB) is an infectious illness caused by the airborne bacteria Mycobacterium tuberculosis. TB can cause serious health problems – particularly if it is not caught early. But the illness is curable, and testing and treatment are free and confidential in the UK, regardless of immigration status.

TB is rare in the UK and most people don’t need to worry about it, particularly if their health is generally good. Your greatest risk of catching TB is through spending a lot of time with people who have TB bacteria in their lungs or throat which they pass on by coughing or sneezing.

People who have TB or are concerned about TB often have lots of questions. If you have a general question about TB, look to see if it’s answered here. If not you can ask us directly using our questions form. Don’t worry – we would never publish your personal details.

Please be aware our advisors are not medically trained and cannot give medical advice, override the opinion of your doctor or comment on individual cases. But we are happy to provide general information about TB and TB-related issues in the UK.

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It may be a huge shock to find out you or a loved one has TB. You might not know anyone else who has the illness or what to expect.

This section of the website talks about latent TB. If you have latent TB, you have TB bacteria ‘asleep’ in your body that can ‘wake up’ and make you ill with active TB.

Many people are offered testing and treatment for latent TB, as this is a good way to help prevent getting active TB in the future. This section explains the differences between latent and active TB, why you may be tested for latent TB, what the test involves, and the treatment available for latent TB.

All about latent TB

This section is about latent TB. If you are worried about symptoms that could be active TB – including a cough, fever, night sweats, loss of appetite, weight loss, tiredness – please visit the pages about active TB.

what is latent tb

What is latent TB

If you have latent TB you have TB bacteria 'asleep' in your body. You are not ill at the moment, but the TB bacteria can 'wake up' and make you ill with TB in the future. The good news is that you can treat latent TB to help stop this happening.

latent tb and me

Latent TB and me

There are many reasons to get tested for latent TB. You may have lived in a country where TB is more common, know someone who has TB, have an illness or take medication that makes you more vulnerable to TB, or work in a healthcare setting.

latent tb testing

Latent TB testing

Two types of test can diagnose latent TB: a skin test or blood test. Other tests, such as a chest x-ray or investigating sputum/phlegm samples are used to look for active TB.

latent tb treatment

Latent TB treatment

Latent TB can be treated with antibiotics which kill off the sleeping TB bacteria so they cannot wake up andcause active TB. Latent TB testing and treatment is free and confidential.

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