Why is it necessary for high risk groups to have an annual vaccination against influenza?
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Vaccination to prevent flu is particularly important for people who are at high risk of developing serious flu complications.
Influenza vaccination among health-care workers (HCWs) is considered to be the most important strategy for preventing the transmission of influenza viruses to vulnerable patients and minimizing absenteeism among HCWs during annual epidemics [19, 41, 42].
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