Modified vaccinia Ankara (MVA) is an attenuated (weakened) strain of the vaccinia virus. It is being used as a vaccine (called MVA-BN, brand names: Imvanex in the EU, Imvamune in Canada, and Jynneos in the US) against smallpox and mpox, having fewer side effects than smallpox vaccines derived from other poxviruses.
Modified vaccinia Ankara (MVA) is an attenuated (weakened) strain of the vaccinia virus. It is being used as a vaccine (called MVA-BN, brand names: Imvanex in the EU, Imvamune in Canada, and Jynneos in the US) against smallpox and mpox, having fewer side effects than smallpox vaccines derived from other poxviruses.
Source: Wikipedia "Modified vaccinia Ankara" · CC BY-SA 4.0
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