Smallpox

Monkeypox virus in human vesicular fluid. Electron microscopy reveals "M" virus (Mulberry type) of varicella virus in human vesicular fluid. The surface of type "M" viruses is covered with short, coiled filaments, while type "C" or "capsule" viruses have penetrated inside. Photo: depositphotos.com

Fear of an outbreak of monkeypox

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Several cases of the viral disease have been discovered in the United States and Europe and health authorities are preparing to stop its spread. The good news: there is an effective vaccine against it
A boy with smallpox is immortalized on a stamp from Guinea. Photo: shutterstock.

Smallpox viruses threaten again / Sonia Shah

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