The role of hand hygiene in controlling norovirus spread in nursing homes

BMC Infectious Diseases

Table 1 Model parameters: baseline values and investigated ranges

Parameters			Assumed value
Parameters			Baseline	Range	Reference
No. of staff			63	35–85	Collected data
No. of residents			100	59–118	Collected data
Admission and discharge rate		μ	2 %/month	0.01–0.25	Collected data
Transmission probability		p	0.08/contact	0.03–0.18	Calibrated baseline + [15]
Detection rate of infected staff		η	0.68	0.32–1	[16]
Contact rate	Staff-Staff	C_SS	0.045/day	0–0.1	Collected data
	Staff-Resident	C_SR	0.1/day	0.08–0.17	Collected data
	Resident-Resident	C_RR	0.025/day	0–0.15	Collected data
Relative infectiousness of A and E		α	0.05	0–0.1	[8]
Duration of incubation		1/ε	1 day	-	[15]
Duration of symptoms		1/σ	2 days	1–3	[17]
Duration of asymptomatic phase		1/ρ	10 days	-	[18]
Duration of immunity		1/θ	5.01 years	4.0–6.7	[8]
Hand hygiene compliance rate during interactions	Staff-Staff	h_SS	0	0–0.5	Collected data
	Staff-Resident	h_SR	0.15	0.05–0.6	[6, 19, 20]
	Resident-Resident	h_RR	0.1	0–0.5	Collected data

ISSN: 1471-2334