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Table 1 Selected parameter values for Figure 3A and other illustrative scenarios. The notations "Other" or "Other factors" in the column "See also" refers to the text section "Other factors". The symbols are defined in Appendix 2 [see additional file 2] and are included for reference.

From: Logistics of community smallpox control through contact tracing and ring vaccination: a stochastic network model

Description

Values

See also

Symbol

Number of index cases

10–1000

Figure 3C

A

Mean household size

4

 

H

Workplace/social group size

8

Figure 3B

W

Ring vaccinations per day

0–200

Fig. 3A, 3B, Other

K r

Monitored diagnosis rate

1–8 day-1

Figure 5A, 5B

φ

Prob. of finding household contact

0.95

Table 4

υ1

Prob. of finding workplace/social contact

0.8

Fig. 3B, 4AB; Tb. 4

υ2

Delay, tracing household contacts

1–5 days

Figure 6

δ1

Delay, tracing workplace/social contacts

2–10 days

Figure 6

δ2

Relative diagnosis rate after 1st diagnosed case

1.5

Figure 7

a 1

Infectivity, stage 4 relative to stage 5

0.2

Figure 8

k

Infectivity, stage 5 relative to stage 6

0.2

Figure 8

k'

Infection hazard for close contacts

5 day-1

Table 3

λ

Relative hazard for workplace/social contacts

1/3

Table 3

h 2

Casual transmission rate

0.15 day-1

 

β

Prior vaccination fraction

0.25

Other factors

f

Fraction of mild cases

0.03

Other factors

 

Vaccine success rate (for very recent vaccination)

0.667

Other factors

α1

Vaccine success rate (vaccination prior to discontinuation of routine vaccination)

0.5

Other factors

α2

Vaccine success rate full protection

0.999

Other factors

α3