GNH USA

Europe — EMA

Vivotif

Vivotif is a live, attenuated oral vaccine for preventing typhoid fever caused by Salmonella Typhi. This single-dose capsule provides immune protection before t

Salmonella Typhi, Strain Ty21a (Live, Attenuated)

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What is Salmonella Typhi, Strain Ty21a (Live, Attenuated)?

Vivotif is a live, attenuated oral vaccine for preventing typhoid fever caused by Salmonella Typhi. This single-dose capsule provides immune protection before travel to high-risk regions. Store refrigerated to maintain potency. Seek medical advice for personalized recommendations.

What is Salmonella Typhi, Strain Ty21a (Live, Attenuated) used for?

Vivotif is used to help prevent typhoid fever in adults and children over 6 years old. It works by stimulating the immune system to recognize and fight Salmonella Typhi bacteria. Travelers to areas where typhoid is common may benefit from this vaccine. It does not treat active infections but reduces the risk of illness.

What are the side effects of Salmonella Typhi, Strain Ty21a (Live, Attenuated)?

After taking Vivotif, some people may experience mild stomach discomfort or nausea. A small number of users report low-grade fever or headache. These effects are usually temporary and resolve on their own. The vaccine does not cause typhoid fever as it contains a weakened, non-disease-causing strain.

What precautions apply to Salmonella Typhi, Strain Ty21a (Live, Attenuated)?

Keep Vivotif refrigerated between 2°C and 8°C to preserve effectiveness. Do not freeze or expose to high temperatures. Inform your healthcare provider if you have a weakened immune system or severe illness before vaccination. Complete the full dose as directed for optimal protection.

What does Salmonella Typhi, Strain Ty21a (Live, Attenuated) interact with?

Vivotif may interact with antibiotics or other live vaccines. Avoid taking antibiotics for at least 72 hours before or after vaccination, as they can reduce effectiveness. Consult a healthcare professional if you are on any medications or have recently received another vaccine. Alcohol and certain foods do not affect the vaccine but may cause unrelated stomach upset.

Frequently asked questions

How long does Vivotif take to work?+
Protection typically begins about 1–2 weeks after the full dose. Complete the full vaccination course for best results.
Can I take Vivotif if I’m traveling soon?+
Yes, but start the vaccine at least 1 week before travel to allow immunity to develop.
Is Vivotif safe for children?+
Vivotif is approved for children over 6 years old. Consult a pediatrician for personalized advice.
What should I avoid after getting Vivotif?+
Avoid antibiotics for 72 hours before or after vaccination. Follow your healthcare provider’s guidance on other precautions.
Information provided on this page is for educational use by procurement and clinical professionals. Always consult a licensed healthcare provider for medical advice and prescribing decisions. GNH USA supplies this product subject to applicable regulatory and licensing requirements.

Product details

Drug
Salmonella Typhi, Strain Ty21a (Live, Attenuated)
Route
Oral Use
Manufacturer
Bavarian Nordic A/S
Origin
EU

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