The World Health Organization has declared monkeypox a public health emergency as worldwide cases exceed 19,000. WSJ's Denise Roland tells the story of how a Danish company's rarely used smallpox vaccine became the only licensed shot against monkeypox, and how the company's scrambling to meet global demand.
Further reading:
-FDA Clears Danish Monkeypox Vaccine Plant, Paving Way for Use of Doses in U.S.