The European Union’s drug watchdog is in talks with the maker of a vaccine against deadly smallpox to extend its use to monkeypox, a senior official said Thursday. The European Medicines Agency (EMA) said it was working with the manufacturer of the Imvanex jab “out of precaution” to ensure it had supplies if needed. “Despite the outbreak being rather unprecedented in Europe, at present this is not a public health emergency,” EMA vaccines chief Marco Cavaleri said. Monkeypox is related to smallpox, which killed millions around the world every year before it was eradicated in 1980, but has far l…