Is it true? Does the Vaxzevria (AstraZeneca) vaccine contain animal DNA?

The AstraZeneca vaccine uses a chimpanzee adenovirus vaccine vector. This is a harmless, weakened adenovirus that usually causes the common cold in chimpanzees. It has been genetically changed so that it is impossible for it to grow in humans. Find out more below.

covid-19

Does the AstraZeneca vaccine contain animal DNA?

The AstraZeneca vaccine is safe and effective. Find out what is in the AstraZeneca vaccine.

The AstraZeneca vaccine uses a chimpanzee adenovirus vaccine vector. This is a harmless, weakened adenovirus that usually causes the common cold in chimpanzees.

The adenovirus vaccine vector, known as ChAdOx1, was chosen as a suitable vaccine technology for a SARS-CoV-2 vaccine as it has been shown to generate a strong immune response from one dose in other vaccines.

It has been genetically changed so that it is impossible for it to grow in humans.

Chimpanzee adenoviral vectors are a very well-studied vaccine type, having been used safely in thousands of subjects.

The AstraZeneca vaccine has proven to be safe and effective.

With new COVID-19 vaccine developments every day, it’s normal to have questions or concerns, and possibly feel hesitant about getting a vaccine. That's why we're providing accurate, evidence-based answers to questions about COVID-19 vaccines.

Learn more about COVID-19 vaccines

Last updated: 
4 September 2021

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