A study of a smallpox vaccine that could prove vital in the United States' war on bioterrorism is under way at Stanford Medical Center. The trial tests the potency of the Dryvax vaccine, a 1970s ...

For one, variola is a very large virus, so big it can be seen with a normal microscope. Unlike many viruses, it had no animal reservoir. It survived by transmission between humans only, so it had ...

While the race for a Covid-19 vaccine continues, scientists are learning more about the early vaccines used to fight smallpox, the only human infectious disease to be successfully eradicated.

July 8, 2014— -- Vials of the virus that causes smallpox were found in a National Institutes of Health research building that was unequipped and unapproved to handle the deadly pathogen ...

Sure, we all forget stuff. But federal researchers apparently forgot vials of smallpox virus, perhaps for 60 years. The vials were rushed to a secure lab in Atlanta.

The smallpox virus samples were found in a building at the National Institutes of Health in Bethesda, Md., that has been used by the Food and Drug Administration since 1972, according to the CDC.

Under optimum conditions, the fragile smallpox virus could survive 24 hours after being sprayed in aerosol form. Traces of the virus would be gone by the time symptoms of the disease appeared in ...

To this day, only two remaining stocks of the variola virus are known to exist. They are kept under high-security conditions at a U.S. Centers for Disease Control and Prevention laboratory in ...

V ials containing the smallpox virus were discovered in an unused storage section of a government lab, the Centers for Disease Control and Prevention (CDC) said Tuesday.. The vials, which date ...

Smallpox, an infectious disease caused by the variola virus, caused devastating outbreaks for centuries, with about three of every 10 cases proving fatal, according to the C.D.C.