Summary of the key differences between COVID-19 vaccines

David Erskine, Director, London Medicines Information Services, Specialist Pharmacy ServicePublished Last updated See all updates

The COVID-19 vaccines differ in aspects including presentation, pack size, doses per vial, dilution, volume of injection, shelf life, and observation time

Key differences

Be aware that some AZ vaccine may be available in vials with a green cap as well as in vials with a red cap. The vaccines themselves are identical.

Public Health England has produced a guide summarising the key differences.

Change history

  1. Updated link to PHE Guide which now includes Moderna vaccine
  1. Published