1 Murdoch Children's Research Institute, Melbourne, VIC 3052, Australia. paul.licciardi@mcri.edu.au.
2 Department of Paediatrics, University of Melbourne, Parkville, Melbourne, VIC 3010, Australia. paul.licciardi@mcri.edu.au.
3 Immunobiology and Vaccinology Research Laboratory, First Department of Paediatrics, Aghia Sofia Children's Hospital, National and Kapodistrian University of Athens, 111527 Athens, Greece. iopapadatou@med.uoa.gr.
Infections with the bacterium Streptococcus pneumoniae are one of the most common causes of morbidity and mortality in children less than five years of age worldwide, mostly in low- and middle-income countries (LMICs) [...].