UK	United Kingdom
PCV	Pneumococcal conjugate vaccine
VE	Vaccine effectiveness
IPD	Invasive pneumococcal disease
NIP	National Immunization Programme
PD	Pneumococcal disease
NVT	Non-vaccine type
VT	Vaccine type
NBPP	Non-bacteremic pneumococcal pneumonia
ST	Serotype
STC	Serotype class
HSA	Health Security Agency
VCR	Vaccine coverage rate
PSA	Probabilistic sensitivity analysis
RMSE	Root mean squared error