EXOTIC DISEASES:
Smallpox: Clues From a Killer
Jon Cohen
A monkeypox outbreak in the Democratic Republic of Congowhich has yielded more cases than ever before, and more human-to-human transmissionshas rekindled a debate over whether cultures of smallpox virus should be destroyed. The virus, a close relative of monkeypox, is stored in two labs, one in the United States and the other in Russia. Some researchers argue that it may help provide insights into the pathogenicity of this class of viruses.