About BCG Vaccine Injection
BCG Vaccine Injection contains live attenuated BCG bacteria, given to infants to prevent severe TB forms.
Uses
- Prevents severe and life-threatening forms of tuberculosis in infants and young children
- Protects against TB meningitis, a dangerous infection affecting the lining of the brain
- Protects against miliary tuberculosis, a widespread form of TB that spreads through the bloodstream
- Given routinely to newborns as part of national childhood immunization schedules
- Used in some countries as an immunotherapy for early stage bladder cancer
Benefits
- Offers strong protection against the most dangerous childhood TB complications
- A single dose given soon after birth provides long term protection
- Reduces the risk of TB related hospitalization and death in infants
- Safe and well tolerated in healthy newborns when given correctly
- Backed by decades of use in national immunization programs worldwide
What Experts Say
Pediatricians consider BCG one of the most important vaccines given at birth in countries with a high tuberculosis burden. Pakistan ranks among the countries with the highest number of TB cases worldwide, and national health guidelines recommend the vaccine for every newborn before hospital discharge.
The vaccine works by introducing a weakened, live strain of Mycobacterium bovis that triggers an immune response without causing disease. This early exposure trains immune cells to recognize tuberculosis bacteria quickly if the child is exposed later in life. Experts note the vaccine works best when given within the first few days or weeks after birth, before natural TB exposure occurs.
Physicians emphasize that BCG is given only once, since repeat doses do not add meaningful protection and can raise the risk of local skin reactions. Health workers check that the vaccine is stored correctly and injected using proper technique, since errors can affect safety and effectiveness. Doctors also advise delaying the vaccine in babies who are unwell or premature until they become stable.
Drug Class
- Live attenuated bacterial vaccine
- Immunization biological product
- Anti tuberculosis prophylactic agent
BCG Vaccine Injection Uses in Urdu
- نوزائیدہ بچوں کو تپ دق کی شدید اقسام سے بچانے کے لیے استعمال ہوتی ہے
- دماغ کی جھلی کو متاثر کرنے والی ٹی بی میننجائٹس سے تحفظ فراہم کرتی ہے
- خون کے ذریعے پورے جسم میں پھیلنے والی ملیری ٹی بی سے بچاؤ میں مددگار ہے
- پاکستان کے قومی حفاظتی ٹیکہ جات پروگرام کے تحت پیدائش کے فوراً بعد لگائی جاتی ہے
- بعض ممالک میں مثانے کے ابتدائی کینسر کے علاج میں بھی استعمال ہوتی ہے
BCG Vaccine Injection formula
- Bacillus Calmette-Guerin (live attenuated)
How to use BCG Vaccine Injection?
- Administered only by a trained healthcare provider or vaccinator, never self administered
- Given as a single intradermal injection, usually into the upper left arm or shoulder
- Recommended at birth or as soon as possible afterward, per Pakistan's national EPI schedule
- Reconstituted vaccine must be used within the time window specified by the manufacturer and discarded after that
- Only one dose is needed in a lifetime under standard immunization guidelines
Drug Interactions
- Immunosuppressant medicines: Drugs that suppress the immune system, such as corticosteroids or chemotherapy agents, can reduce the vaccine's effectiveness and raise the risk of complications from the live bacteria.
- Other live vaccines: Live vaccines can generally be given on the same day, but if not given together, they should be spaced about four weeks apart unless a doctor advises otherwise.
- Immunoglobulins and blood products: Recent administration of immunoglobulins or blood transfusion products may affect immune response and should be discussed with a doctor before vaccination.
- Anti tuberculosis medicines: Concurrent use of anti TB drugs can interfere with the live vaccine strain and reduce its protective effect.
Risks and warnings
- Not for immunocompromised individuals: Should not be given to infants with confirmed or suspected HIV infection, severe combined immunodeficiency, or other conditions that weaken the immune system, since the live bacteria can cause serious infection.
- Avoid during active infection or fever: Vaccination should be postponed in babies who are unwell, have a fever, or show signs of active infection until they recover.
- Local reaction at injection site: A small red bump, blister, or ulcer commonly appears at the injection site within weeks and heals slowly over several months, leaving a small scar.
- Abscess or swollen lymph nodes: In some infants, a local abscess or swollen lymph node near the injection site can develop and may need medical assessment.
- Rare disseminated infection: In severely immunocompromised infants, the live bacteria can rarely spread throughout the body, causing serious disseminated BCG infection that requires urgent treatment.
- Not for use during pregnancy: As a live vaccine, BCG is not recommended for pregnant women.
BCG Vaccine Injection Side Effects
- Redness, swelling, or a small lump at the injection site
- A blister or open sore that forms a few weeks after vaccination
- Mild fever in the days following vaccination
- Swollen lymph nodes near the injection site, usually under the arm
- A permanent small scar at the injection site after healing
- Rarely, abscess formation requiring medical drainage
- Very rarely, spread of infection beyond the injection site in babies with weak immunity
Storage Conditions
- Store in a refrigerator between 2°C and 8°C, never freeze
- Keep the vial away from direct light at all times, since the vaccine is light sensitive
- Maintain an unbroken cold chain during transport from the pharmacy or clinic to the point of use
- Use reconstituted vaccine within the time window specified by the manufacturer, then discard any unused portion
- Keep out of reach of children and never use a vial past its expiry date
