Improving vaccine trials in infectious disease emergencies

Area of Science:

• Infectious disease emergency preparedness
• Clinical trial methodology
• Public health response

Background:

• Global efforts are increasing to test countermeasures during infectious disease emergencies.
• Understanding optimal clinical trial designs is essential before outbreaks occur.
• There is a need for global consensus on trial designs for various emergency scenarios.

Purpose of the Study:

• To identify key needs for enhancing the speed, validity, and ethics of clinical studies for infectious disease countermeasures.
• To focus on vaccine efficacy and effectiveness studies in emergency settings.
• To inform updates of protocols and roadmaps for clinical research in emergencies.

Main Methods:

• Focus on vaccine efficacy and effectiveness studies in emergency contexts.
• Highlighting critical needs for trial design and methodology.
• Reviewing existing protocols and roadmaps for clinical research.

Main Results:

• Formal randomized trials are needed, even in most emergency situations.
• Individually randomized trials are recommended for many emergency scenarios.
• Six key areas for innovation in trial methodology have been identified.

Conclusions:

• Formal and individually randomized trials are essential for robust evidence generation during infectious disease emergencies.
• Methodological innovation in clinical trials is critical for effective and ethical research.
• These findings should guide the development and updating of research protocols and strategic roadmaps.