PHILADELPHIA (AP) — Frozen vials labeled “Smallpox” that were discovered in a freezer at a vaccine research facility in Pennsylvania “contain no trace of virus known to cause smallpox,” federal health ...

Smallpox is caused by the variola virus, which can be spread though infectious droplets that are exhaled as people talk, cough, or sneeze. It seems like smallpox has infected humans for as long as ...

Dr. Zhilong Yang, an associate professor in the Texas A&M School of Veterinary Medicine & Biomedical Sciences, served on a national committee that studied the threat of a new smallpox outbreak.

On May 8, 1980, forty-five years ago, the World Health Organization, a part of the United Nations, announced that officials had eradicated smallpox from the world’s population. The last case occurred ...

PHILADELPHIA, Pa. — Frozen vials labeled “smallpox” that were recently discovered at a Pennsylvania facility contained no trace of the virus that causes the eradicated disease, according to the ...

Vaccines against smallpox given until the mid-1970s offer continuing cross-reactive immunity to mpox (previously known as monkeypox), researchers report. Vaccines against smallpox given until the ...

It was late November of 1801, and William C. C. Claiborne arrived in Natchez only a few months before a smallpox epidemic hit the Mississippi Territory. Claiborne had just been appointed to his ...

Many diseases that once affected millions are now rarely seen, thanks to vaccines. From smallpox to polio, immunisation has ...