The smallpox vaccine is given using a two-pronged needle that is dipped into the vaccine solution. When removed, the needle retains a droplet of the vaccine. The needle is used to prick the skin a ...

SAN FRANCISCO -- With the jab of a needle, volunteers are being injected with a smallpox vaccine as part of government-sponsored experiments that come amid heightened fear of biological terrorism.

Aug 30 (Reuters) - The U.S. Food and Drug Administration granted expanded approval to Emergent BioSolutions' (EBS.N), opens new tab smallpox vaccine for use in people at high risk of mpox infection.

English physician Edward Jenner developed the first vaccine more than 200 years ago to protect against smallpox. It was needle-free, involving arm-to-arm inoculation with the vaccinia virus.

An airman administers a vaccine to a soldier at Fort Stewart, Ga., April 25, 2013. (Staff Sgt. Patrice Clarke/Army) A soldier who had his tattoo touched-up over his smallpox vaccination four days ...