Human cases of monkeypox in the Democratic Republic of Congo (DRC) are on the rise, a consequence of the halting of mass smallpox vaccination efforts 30 years ago after the disease was eradicated, reported an international team of researchers from the United States, the DRC, and Switzerland (Rimoin AW et al. Proc Natl Acad Sci U S A. 2010;107:16262-16267). Smallpox vaccination offers cross-protective immunity against monkeypox, which can cause a serious smallpox-like illness.
Stephenson J. Emerging Monkeypox. JAMA. 2010;304(15):1659. doi:10.1001/jama.2010.1451