Participate in the GCCR studies!

Share the survey

Share the Smell & Taste Check


The GCCR is a group of 600 scientists, clinicians, and patient advocates across 50 countries founded in response to the COVID-19 pandemic.

Our goal is to collect evidence-based information to combat the spread of COVID-19.

For more information about this study, please contact John Hayes (
For more information about our smell & taste check, please contact Kathrin Ohla (