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Table 2 Trial groups and timeline of vaccination, specimen collection, and measurement of endpoints

From: Pneumococcal conjugate vaccination schedules in infants—acquisition, immunogenicity, and pneumococcal conjugate and yellow fever vaccine co-administration study

 

Group

Age

3+0

Acquisition (n = 392)

Immunogenicity (n = 112)

1+1

Acquisition (n = 196)

Immunogenicity-YF/PCV co-administration (n = 112)

1+1 YFseparate

Acquisition (n = 196)

Immunogenicity-YF/PCV separate administration (n = 112)

6 wk

PCV13

NPS (n = 392)

PCV13

NPS (n = 196)

PCV13

NPS (n = 196)

10 wk

PCV13

Blood

IgG (n = 112)

OPA (n = 60)

 

14 wk

PCV13

  

18 wk

Blood

IgG (n = 112)

OPA (n = 60)

  

6 mo

NPS (n = 392)

NPS (n = 196)

NPS (n = 196)

9 mo

YF

Blood

IgG (n = 112)

NPS (n = 392)

YF & PCV13

Blood

IgG (n = 56)

NPS (n = 196)

PCV13

Blood

IgG (n = 56)

NPS (n = 196)

10 mo

Blood

YFNA (n = 112)

IgG (n = 112)

OPA (n = 60)

NPS (n = 392)

Blood

YFNA (n = 112)

IgG (n = 112)

OPA (n = 60)

NPS (n = 196)

YF

Blood

IgG (n = 112)

NPS (n = 196)

11 mo

NPS (n = 392)

NPS (n = 196)

Blood

YFNA (n=112)

NPS (n=196)

12 mo

NPS (n = 392)

NPS (n=196)

NPS (n=196)

13 mo

NPS (n = 392)

NPS (n=196)

NPS (n=196)

14 mo

NPS (n = 392)

NPS (n=196)

NPS (n=196)

18 mo

Blood

IgG (n = 112)

OPA (n = 60)

NPS (n = 392)

Blood

IgG (n = 112)

OPA (n = 60)

NPS (n = 196)

NPS (n=196)

  1. PCV13 13-valent pneumococcal conjugate vaccine, YF yellow fever vaccine, IgG serotype-specific anti-pneumococcal IgG, YF NA yellow fever neutralising antibody, OPA opsonophagocytic assay