Table 1.

Theoretical example of analysis of pneumococcal serotype- specific data using the 9- and 7-valent algorithm

Serotype	IgG level to individual serotype	Contribution to IPD caused by serotypes in the 9-valent or 7-valent vaccine (%) †
Patient Y (Age group: 65–74 years)
1	0·37	5·4
4	0·06	10·1
5	0·37	0·0
14	0·06	32·1
19F	0·23	6·0
23F	0·21	12·5
6B	0·28	12·5
18C	1·82	5·4
9 V	0·15	16·1
Individual susceptibility (%)		58·3
Patient X (Age group: 1–2 years)
4	2·44	4·5
14	0·17	46·6
19F	0·65	14·8
23F	4·38	6·8
6B	0·08	14·8
18C	5·07	9·1
9 V	0·28	3·4
Individual susceptibility (%)		61·4

^†9-valent vaccine for Patient Y and 7-valent vaccine for patient X.