Seasonal Immunity Study

Surrey Clinical Research Centre- Investigation into Seasonal Changes in Human Immune Function

This study aims to characterise seasonal and daily rhythms in the immune system which could allow the identification of new treatment plans including favourable times for vaccinations.

The Surrey Principal Investigator for this study is Professor Debra Skene.


Participant Requirements 

Healthy adults between 18 and 35 years old

Females of child bearing potential must be on a hormonal contraceptive (e.g. combined oral contraceptive pill, contraceptive implant, IUS, progesterone only pill).

Be white and have lived in in the United Kingdom, Ireland or continental Europe for the majority of your life

Not working rotating or night shifts

Agree to keep a constant sleep/wake cycle, with 6-9-hours in bed, as agreed with the research team, and report it.

Have a BMI of 19 to 28kg/m2.



Study 384 Dates Cohort 1

Visit 1    Screening    Wednesday 13th or Thursday 14th November  4 hours Surrey CRC

Visit 4A Pre Residential Visit Monday 25th November 2019 Outpatient Surrey CRC

Visit 4B  Residential Visit Sunday 8th - Thursday 12th December 2019 3 nights Surrey CRC

Visit 4C  Post Residential Visit Friday 20th December 2019 Outpatient Surrey CRC


Study 384 Dates Cohort 2

Visit 1    ScreeningWednesday 13th November or Thursday 14th November 4 hours Surrey CRC

Visit 6A Pre Residential Visit Monday 2nd December 2019 Outpatient Surrey CRC

Visit 6B Residential Visit Monday 16th - Thursday 19th December 2019 3 nights Surrey CRC

Visit 6C Post Residential Visit Thursday 2nd January 2020    Outpatient    Surrey CRC  

Inconvenience Allowance 


Amount TBC

Interested in taking part? 


Already registered as a participant with us?

New participant application form

If you have already registered with us or have previously taken part in a study at the CRC please click "already registered" to express your interest. If you have not previously registered please click "new participant application form".

More Information? 


If you would like more information under no obligation, or are interested in taking part and wish to complete a telephone health screen, please contact the Clinical Research Recruitment team on: Freephone 0800 269 847, by email

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