What do we mean when we describe the “effectiveness” of the coronavirus vaccines?

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#vaccinefacts – Part 6 What do we mean when we describe the “effectiveness” of the coronavirus vaccines?

All the vaccines which have been approved for use in the EU can protect our citizens from severe cases of the disease or being admitted to hospital. But what exactly does the effectiveness of a vaccine mean? Professor Sandra Ciesek, virologist at the University Hospital Frankfurt, explains this to us.