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Table 2 Contact rates within the nursing home: collected data and rates used in the model

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

A- Contacts between staff members and residents
Staff category Mean no. of contacts/day/resident Mean duration of contacts (min) Risk level of contacts Weighted no. of contacts/day
Nurse 1 6.5 1 0.44
Auxiliary nurse 2 15 a 1a 2
Receptionist 1 1 0.5 0.04
Activity leader 1 20 0.5 0.67
Ancillary staff (e.g. catering staff) 2 40 0.5 2.67
Therapist 1 10 0.5 0.34
Building maintenance staff 1 5 0.5 0.17
Total weighted number of contacts/resident/day 6.33
Computed Staff-Resident daily contact rate CSR 6.33/63 = 0.1
B- Contacts between staff members
Average proportion of the working staff contacted over a given day, per staff member Proportion of staff working on any given day in the NH Risk level of contacts Computed Staff-Staff daily contact rate CSS
90 % 21 % 0.25 0.045
C- Contacts between residents
Mean no. of contacts/day/resident Risk level Weighted no. of contacts/day Computed Resident-Resident daily contact rate CRR
5 0.5 2.5 2.5/100 = 0.025
  1. aTaken as reference