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

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

1^a

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

6.33

6.33/63 = 0.1

Proportion of staff working on any given day in the NH

Risk level of contacts

Computed Staff-Staff daily contact rate C_SS

21 %

0.25

0.045

Mean no. of contacts/day/resident

Weighted no. of contacts/day

Computed Resident-Resident daily contact rate C_RR

5

2.5

2.5/100 = 0.025