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It is injected between the layers of skin on the upper arm near the shoulder by a Registered Nurse who has been trained in providing the vaccination. Is the vaccine safe? In most circumstances the vaccine is safe. As with any vaccination, BCG can result in severe adverse reactions and you should discuss this with the nurse before vaccination.
Are there any side effects? They will ask you to provide chest x-rays and sputum to check that you are responding to treatment. Your health care provider will let you know when your treatment is complete. To help protect other people, it is important to tell your health care provider who you have been in contact with to help identify people at risk for TB infection.
All information you give will be kept confidential. If you have contagious active TB disease in the lungs or throat, you can spread the TB bacteria to other people, even after weeks of treatment. Your health care provider will ask you to wear a mask and stay at home to decrease the risk of spreading the disease. This is called home isolation; it is a very important step you must do to protect other people. Your health care provider will tell you when you can stop home isolation. Skip to main content.
Last Updated:. October Download PDF:. What is TB? TB is a serious disease caused by a germ bacteria that spreads through the air. How does TB spread? This indicates a positive outcome no matter what other circumstances there may be. In many cases, doctors will use additional methods to be sure the results are as accurate as possible.
There is room for error with TB skin tests. Doctors use them as one part of a more detailed diagnosis, as opposed to stand-alone tests. If someone has TB, they may be started on medication immediately. If the diagnosis is unclear, the doctor will use other methods to reach a correct diagnosis.
One of the next steps will involve looking for signs of TB in the lungs, by using either an X-ray or CT scan. TB causes changes in the lungs. Most commonly, little white spots will be visible, which means the body is fighting bacteria. X-rays are usually accurate enough, but a CT scan may also be used to give a closer look.
CT scans provide a more detailed picture, which helps a doctor decide what action to take. This is the mixture of saliva and mucus that is coughed up due to an infection. A sputum test is used to determine what type of TB bacteria is attacking the body. This also helps decide how best to treat it. Some people may have a bad reaction to the TB skin test. TB is a serious infection that affects the lungs and sometimes other parts of the body, such as the brain meningitis , bones, joints and kidneys.
Find out more about tuberculosis TB. It's given on the NHS only when a child or adult is thought to have an increased risk of coming into contact with TB. If the BCG vaccine is recommended for your baby, it will usually be offered at about 28 days old. This may be offered at a hospital, a local healthcare centre or, occasionally, at your GP surgery. BCG vaccination may also be recommended for older children who have an increased risk of developing TB, such as:.
BCG vaccination is rarely given to anyone over the age of 16 because there is little evidence it works very well in adults.
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