- Scanning electron microscope photograph of bifurcated needle
Benjamin Rubin, MD, of Wyeth Laboratories patented the bifurcated needle for delivery of smallpox vaccine. Bifurcated needle vaccination required one-fourth the amount of vaccine needed with previous methods and was simpler to perform. Shown here is a scanning electron microscope photograph of a bifurcated needle.
- Janice Carr, Centers for Disease Control and Prevention
- Timeline Category:
Diseases & Vaccines