Related Experiment Video
Updated: Oct 26, 2025

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates
Published on: January 27, 2019
US Tropical Disease Priority Review Vouchers: Lessons In Promoting Drug Development And Access
David B Ridley1, Pranav Ganapathy2, Hannah E Kettler3
1David B. Ridley (david.ridley@duke.edu) is faculty director of health sector management at the Fuqua School of Business, Duke University, in Durham, North Carolina.
Abstract:
The COVID-19 global pandemic has devastated lives and economies. It has served as a reminder of how critical it is to invest in preventing and treating infectious diseases. Until the COVID-19 pandemic, the largest US government-sponsored reward for infectious disease drug and vaccine development was the Tropical Disease Priority Review Voucher program. Under this program, the Food and Drug Administration awards a priority review voucher to the sponsor of a new drug or vaccine for tropical infectious diseases. The voucher then can be exchanged for the faster review of one drug. We provide case studies for tropical disease voucher recipients between 2007 and 2018, examine the effects of the voucher program on product innovation and access, and recommend that policy makers protect the voucher program while creating complementary incentives.
Related Concept Videos
Prescription, Nonprescription and Orphan Drugs
The misuse and addiction to prescription drugs is a growing problem that can affect people of all age groups, specifically teenagers. This can happen when prescription medications are used in ways not intended by the prescriber, such as taking someone else's prescription or using medication for...
Drug Discovery: Overview
Drug Administration and Therapy Phases: Overview
The pharmaceutical phase focuses on leveraging the physicochemical properties of the drug to design and manufacture an effective product. Variants include orally administered tablets or capsules, topical creams or ointments, and parenteral-delivery solutions or emulsions.
The pharmacokinetic phase...
Clinical Trials: Overview
Drug Regulation
Preclinical Development: Overview

