Effectiveness assessment of countermeasures against bioterrorist smallpox attacks in Japan using an individual-based model

Table 9 Efficacy of vaccination

Time of vaccination	Residual immunity subclass	Symptom	Efficacy (%)
Before infection	A	Full protection	100
	B	Full protection	99
	B	Modified	1
	C	Full protection	97
	C	Modified	3
4 days after infection	A	Full protection	100
	B	Full protection	95
	B	Modified	5
	C	Full protection	90
	C	Modified	10
5-7 days after infection	A	Full protection	20
	A	Modified	80
	B	Full protection	10
		Ordinary	20
		Modified	70
	C	Ordinary	38
		Modified	60
		Hemorrhagic	2
From 8 day after infection	A–C		0

ISSN: 1347-4715