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Leading research to understand, treat, and prevent infectious, immunologic, and allergic diseases
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Online Screener

Healthy people can help us better understand, treat, and prevent diseases. Complete an online screener if you want to volunteer for a clinical research study.​​​

NIAID HIV and Emerging Infectious Diseases Program

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Contact Information

For information and to ask questions about a participating in a study, please contact

Patient Recruitment and Public Liaison Office
Toll Free: 800-411-1222
TTY: 866-411-1010
Se habla español.
Office hours: 8:30 a.m. – 3:30 p.m. Eastern Time

Photo of a staff member answering the phone.

If you reach voicemail, please leave

  • Your name
  • Your phone number (clearly stated and repeated)
  • Times when it might be best for us to return your call
    We usually return calls during regular working hours (Eastern Time).
  • When leaving a message, please let us know if we may leave detailed information on your voicemail. If you prefer, we can simply leave a call-back number to protect your confidentiality.

Info on Other NIH studies

NIH Patient Recruitment & Public Liaison Office
800-411-1222 (also for Spanish Speakers)

Info for Healthy Volunteers

800-892-3276 (toll free) or 301-496-4763

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Last Updated October 26, 2011