"Dr. Millman also helped create a test for hepatitis B that substantially reduced the risk of infection from blood transfusions.
Hepatitis B is one of five viruses known to cause liver inflammation; it can lead to cancer. By some estimates, more than 350 million people are carriers, especially in Asia and Africa. The virus spreads as H.I.V. does — via blood, semen and other bodily fluids — but is more infectious."
The first virus-like particle vaccine - albeit non-recombinant, because it was purified from plasma obtained from infected people.