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All you need to know about flu clinics

All you need to know about flu clinics


Kirsty Armstrong
SRN FPcert BSc(Hons) NPDip PGCert Ed PGDip
Senior Lecturer/Practitioner in Primary Care
St George’s Hospital

Influenza is an acute infection caused by a virus. Three category strains – A, B and C – are used in the formulation of the vaccine each year. These strains are those most prevalent in the worldwide spread of influenza. The virus does exhibit antigenic drift most seasons and antigenic shift periodically.1 This means a new formulation of the vaccine is needed every year.

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