Can informal social distancing interventions minimize demand for antiviral treatment during a severe pandemic?

BMC Public Health

Table 1 Parameter values and assumptions used for the Canadian antiviral stockpile model

Item	Strain	Value (range)	Reference(s)
Transmissibility
R0	1957/1958	1.6 (attack rate = 37%)	[8, 26, 34–36]
	1968/1969	1.8 (attack rate = 41%)	[8, 26, 34, 35, 37, 38]
	1918	2.0 (attack rate = 45%)	[8, 26, 34, 35, 39, 40]
Natural history
Latent period	Seasonal	2.1 days	[41]
Duration of infection	Seasonal	4.8 days	[41]
Pre-existing immunity in individuals > years		0% (0 – 40%)	Assumption
Clinical characteristics
Proportion symptomatic	1957	60%	[8]
Proportion of symptomatic cases seeking medical attention	1957	70%	[8]
Vaccination
Vaccine coverage by age group	Age group	RRFSS (%)
	Age group	[27]
	0-17	60
	18-22	62
	23-52	54
	53-64	65
	65+	75

RRFSS – Rapid Risk Factor Surveillance System.
Attack rates are calculated as base case scenarios in the absence of any interventions.

ISSN: 1471-2458