There is a really useful set of definitions relevant to adult immunisation in the SAATI Report (Adult Vaccination: A Key Component of Healthy Ageing)
What are the barriers to adult vaccination across Europe, and in what context do those barriers exist?
Mothers who are immunised against influenza during pregnancy can significantly reduce the risk their babies acquiring the disease during their first six months of life
Researchers in the UK find flu vaccinations administered in the morning can yield up to four times as many antibodies than vaccinations given in the afternoon.