COVID-19 Sub-Study Login

Participant LoginEU Residents: see below before you proceed
  • Having trouble logging in? Check our FAQ page or send an email to with your name and the study you are in (NHS2, NHS3, GUTS). We’ll be happy to help.
  • If your session expires, return here to log in and pick up where you left off.


If you are currently an EU resident, please review our website privacy policy (particularly Section 8), which outlines how your data will be processed.

Questionnaire responses will remain strictly confidential and will be used only for medical statistical purposes. More information on confidentiality and privacy is available here.
If you have any questions, please check our FAQ page or email us at

SSL Certificate Authority
Branch: master
Build Version: 0.0.5
Commit ID: 31a4d8f2d8a0bbed4bae64e54939dbc524729e16
Build Time: 2020-04-21T14:34:08-0400
Swarm Project Stage: prod