The mystery virus that protects against monkeypox - BBC

The vaccine being used to prevent monkeypox is made from a lost virus that no one has ever been able to identify. How has this happened? And could it still exist in the wild?

The other vaccine, ACAM2000, is a less-favoured option in the current monkeypox outbreak. First developed in the early 2000s as an alternative to the vaccinia strains used to eradicate smallpox, it h… [+3055 chars]

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