Alexander C. Dowell
Institute of Immunology & Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
Dagmar Waiblinger, John Wright 1
Contributed equally.
Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, United Kingdom
Shamez N. Ladhani 2
Contributed equally.
Immunisation Department, UK Health Security Agency, 61 Colindale Avenue, London, United Kingdom
Paul Moss ⁎, 3
Contributed equally.

for the sKIDS Investigation team
Institute of Immunology & Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom