Bacillus Calmette-Guerin

Introduction

Bacillus Calmette-Guerin (BCG) is a live attenuated strain of Mycobacterium bovis used primarily as a vaccine against tuberculosis (TB). Apart from its role in TB prevention, BCG is also widely used as an intravesical therapy for early-stage bladder cancer. It stimulates the immune system to fight against infections or cancer cells. This composition is administered under professional medical supervision and plays a significant role in global immunization programs and urologic oncology treatment.

Uses of Bacillus Calmette-Guerin

• Prevention of tuberculosis (especially in infants and children)
• Treatment of superficial bladder cancer
• Used in non-invasive carcinoma in situ (CIS) of the bladder
• As part of national immunization programs

How Bacillus Calmette-Guerin Works

BCG works by stimulating the immune system. When injected or instilled into the bladder, it activates immune responses that attack TB-causing bacteria or cancerous cells. In the bladder, it triggers an inflammatory reaction that kills cancer cells and reduces tumor recurrence, making it a powerful immunotherapy agent.

Benefits of Bacillus Calmette-Guerin

• Effective in preventing severe forms of childhood tuberculosis
• Reduces recurrence of bladder cancer after surgery
• Non-invasive alternative to radical treatments
• Proven track record in global immunization programs
• Stimulates the body’s natural immune defense

How to Take Bacillus Calmette-Guerin

For TB prevention, BCG is administered as a single intradermal injection, usually given to newborns. For bladder cancer, it is instilled directly into the bladder via a catheter under sterile medical conditions. Treatment schedules for cancer vary depending on the severity and response, usually given weekly for 6 weeks initially.

Type of Dosage Available

• Intradermal injection (for TB vaccine)
• Intravesical solution (for bladder cancer therapy)

Side Effects of Bacillus Calmette-Guerin

• Fever and mild flu-like symptoms
• Pain or irritation at the injection or instillation site
• Urinary frequency and burning sensation
• Hematuria (blood in urine)
• Serious systemic infections (rare)

Safety Advice

• Should not be given to immunocompromised individuals
• Live vaccine – avoid contact with infected fluid post-treatment
• Delay BCG therapy in patients with active urinary tract infection
• Inform your doctor about previous TB exposure or testing
• Pregnant women should avoid BCG unless absolutely necessary

Frequently Asked Questions (FAQs)

Q: What is Bacillus Calmette-Guerin used for?
A: It is used for preventing tuberculosis and treating superficial bladder cancer.

Q: Is BCG a live vaccine?
A: Yes, BCG is a live attenuated bacterial vaccine derived from Mycobacterium bovis.

Q: How is BCG administered for bladder cancer?
A: It is instilled directly into the bladder through a catheter, under clinical supervision.

Q: Can BCG cause side effects?
A: Yes, common side effects include fever, bladder irritation, and flu-like symptoms. Serious effects are rare but possible.

Q: Is BCG safe for children?
A: Yes, BCG is widely used in children to prevent tuberculosis, especially in countries with high TB incidence.