Typhoid Vaccine Injection

Category: Vaccine
Form: Injectable solution (intramuscular)

Uses:

• Provides protection against typhoid fever, caused by Salmonella Typhi.

• Recommended for people traveling to or living in areas where typhoid is common.

• Used to prevent outbreaks in communities at risk.

Mechanism of Action:

• Contains inactivated (killed) Salmonella Typhi bacteria or Vi capsular polysaccharide antigen depending on vaccine type.

• Stimulates the immune system to produce antibodies against Salmonella Typhi.

• If exposed to the bacteria later, the body can mount a rapid immune response, preventing infection.

Administration:

• Given intramuscularly, typically in the upper arm (deltoid muscle).

• Usually a single dose for adults; some vaccines may require a booster after 2–3 years.

Side Effects:

• Mild pain, redness, or swelling at the injection site.

• Low-grade fever, headache, or fatigue may occur.

• Rare: severe allergic reaction (anaphylaxis).

Precautions:

• Avoid in individuals with known severe allergy to any component of the vaccine.

• Use with caution in moderately or severely ill patients.

• Ensure proper storage and handling to maintain vaccine potency.

Summary:
The Typhoid Vaccine Injection protects against typhoid fever by stimulating the immune system to produce antibodies against Salmonella Typhi. Administered intramuscularly, it is generally safe, with mild injection site reactions or fever being the most common side effects. Boosters may be required depending on the vaccine type and risk factors.