Virus smallpox

Section Navigation. Facebook Twitter LinkedIn Syndicate. What is Smallpox? Minus Related Pages. Related Links. Links with this icon indicate that you are leaving the CDC website. Thousands of years ago, variola virus smallpox virus emerged and began causing illness and deaths in human populations, with smallpox outbreaks occurring from time to time.

Thanks to the success of vaccination, the last natural outbreak of smallpox in the United States occurred in In , the World Health Assembly declared smallpox eradicated eliminated , and no cases of naturally occurring smallpox have happened since. Smallpox research in the United States continues and focuses on the development of vaccines, drugs, and diagnostic tests to protect people against smallpox in the event that it is used as an agent of bioterrorism.

Section Navigation. Facebook Twitter LinkedIn Syndicate. Smallpox Virus Minus Related Pages. Show references Friedman HM, et al. The epidemiology, pathogenesis and clinical manifestations of smallpox.

Accessed Feb. Smallpox vaccine: Drug information. Smallpox vaccine: Patient drug information. Hall JB, et al. Biological warfare. In: Principles of Critical Care. New York, N. Centers for Disease Control and Prevention. Frequently asked questions and answers on smallpox.

World Health Organization. Friedman HM, et al. Variola virus smallpox. Accessed Aug. Isaacs SN, et al. Vaccinia virus as the smallpox vaccine.

Accessed Sept. Tosh PK expert opinion. Mayo Clinic.