Andrew Lees, Ph.D., is founder and scientific director of Fina Biosolutions, LLC (Rockville, Md.), a company focused on promoting affordable conjugate vaccines by making the technology available to emerging market vaccine manufacturers. Among his contributions in the field, Lees developed an efficient linking chemistry which is widely used in conjugate vaccines, a class that includes vaccines for S. pneumoniae and meningococcal disease. The chemistry has helped to reduce the cost of these vaccines.