My mum was a nurse in the UK, before she retired (10+ years ago) the association warned that multiple flu shots increased the risk of severe cases of infection of the strains not in the vaccine. IIRC they weren't recommending more than 3 in a 10 year period.
My mum was a nurse in the UK, before she retired (10+ years ago) the association warned that multiple flu shots increased the risk of severe cases of infection of the strains not in the vaccine. IIRC they weren't recommending more than 3 in a 10 year period.