The expected probability of an employee being absent from work following an influenza vaccination was reduced from 5.7 to 1.8% when the incidence of influenza in the community was 6%.
At a disease incidence of 6%, the expected reduction in the number of days of lost productivity due to the introduction of a vaccination programme in the workplace was:
44 when 20% of employees were vaccinated,
88 when 40% of employees were vaccinated,
132 when 60% of employees were vaccinated,
176 when 80% of employees were vaccinated, and
220 when 100% of employees were vaccinated.
In the absence of an occupational vaccination programme, the expected costs of lost productivity were 9,072 for an influenza incidence of 2%, 27,132 for an influenza incidence of 6%, and 45,192 for an influenza incidence of 10%.
For an influenza incidence of 6% (2%; 10%), the estimated cost of averted lost productivity when following the programme was:
4,613 (1,542; 7,683) when 25% of employees were vaccinated,
9,225 (3,085; 15,366) when 50% of employees were vaccinated,
13,838 (4,627; 23,048) when 75% of employees were vaccinated, and
18,450 (6,169; 30,731) when 100% of employees were vaccinated.