Current Covid-19 vaccine frontrunners

Most hospitals and pharmacies do not have the cold storage facilities necessary for the Pfizer/BioNTech vaccine, while the Moderna and AstraZeneca/Oxford ones can be more easily stored. Photo: Bloomberg

There have been three major Covid-19 vaccines announced so far.

It is easier to remember them by which company they are from: namely, Pfizer/BioNTech, Moderna and AstraZeneca in partnership with University of Oxford in the United Kingdom.