This means that there are extensive measures in place to ensure that studies are well designed, that any possible risk is minimised, and that there are processes to identify harm.
Extensive ecological studies are underway in three African countries, including DR Congo, to try to find the "reservoir" - this work essentially involves checking for signs of the virus in thousands of different species of animal, in order to identify the carrier.
Congress did extensive research before reauthorizing the act in 2006, and recent studies prove Section 5 works well in targeting places where discriminatory voter practices exist.
It appears to be superior to standard antibody-based quality-control tests currently used for that purpose, but such scientific advances will need to undergo extensive validation studies before they can be considered a reliable predictor of effects in vivo and eliminate the need for clinical data.