How effective is the BCG?
The vaccine is 70 to 80% effective against the most severe forms of TB, such as TB meningitis in children.
It’s less effective in preventing respiratory disease, which is the more common form of TB in adults..
Is it normal for BCG vaccine to have pus?
There are some rare side effects associated with the BCG vaccine. If any of the following occur, see your GP: A large abscess (collection of pus) at the injection site. Tenderness and swelling under the left arm – this could indicate an infection of the glands (called the axillary lymph nodes).
Does BCG always leave a scar?
There was no scar or blister after my child’s BCG jab. Did it work? A raised blister will appear in most people vaccinated with BCG, but not everyone. If your child did not have this reaction to the vaccine, it does not mean that they have not responded to it.
How long does BCG last?
How long does the vaccine protection last? Studies show that the BCG vaccine protects against serious TB disease for up to 15 years after vaccination.
Can BCG vaccine be repeated?
There is no proven benefit of repeated BCG vaccination against TB. This also applies to revaccination of BCG-vaccinated individuals who remain negative by subsequent tuberculin testing. In the absence of a scar in children in high-burden countries, BCG vaccination is indicated.
What if scar is not seen after BCG vaccination?
While it is correct to ‘assume’ failed BCG vaccination if no scar is seen 90 days after inoculation, it does not necessarily mean that it had actually failed to induce some immune response that can be proved by laboratory tests.
How is a BCG lump treated?
Keep the injection site clean and dry. Use cool boiled water to clean the site if necessary, and wipe dry with a clean gauze afterwards. Do not apply any medications or ointments and do not compress or bandage the injection site.
Why is BCG no longer given?
However, BCG is not generally recommended for use in the United States because of the low risk of infection with Mycobacterium tuberculosis, the variable effectiveness of the vaccine against adult pulmonary TB, and the vaccine’s potential interference with tuberculin skin test reactivity.
What are the side effects of BCG?
Treatment with BCG can cause a wide range of symptoms. It’s common to have flu-like symptoms, such as fever, achiness, chills, and fatigue. These can last for 2 to 3 days after treatment. It also commonly causes a burning feeling in the bladder, the need to urinate often, and even blood in the urine.