At the turn of the 20th century, a vaccine had been developed for smallpox, a virus that killed millions in the 1800s. Those who survived the disease were often left badly scarred or blind. The ...

Smallpox was a severe infectious disease that affected humans for thousands of years before its eradication in the late 20th century. The symptoms included a distinctive rash, pustules, and fever.

More than two years into the COVID-19 pandemic, people are getting used to the idea that the virus isn't going to disappear. Scientists predict that COVID will likely become endemic, a permanent part ...

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 ...

At the turn of the 20th century, a vaccine had been developed for smallpox, a virus that killed millions in the 1800s. Those who survived the disease were often left badly scarred or blind. The ...