European Commission authorises AstraZeneca, the third safe and effective vaccine against COVID-19

European Commission has granted a conditional marketing authorisation (CMA) for the COVID‑19 vaccine developed by AstraZeneca, the third COVID-19 vaccine authorised in the EU.

This authorisation follows a positive scientific recommendation based on a thorough assessment of the safety, effectiveness and quality of the vaccine by the European Medicines Agency (EMA) and is endorsed by the Member States.

The AstraZeneca vaccine will be given to adults aged 18 years and older for preventing COVID-19. The vaccine causes the immune system (the body’s natural defences) to produce antibodies and specialised white blood cells that work against the virus, so giving protection against COVID-19. People vaccinated will receive two injections of the AstraZeneca vaccine.

According to EMA, most of the participants in the studies were between 18 and 55 years old. There are not yet enough results in older participants (over 55 years old) to provide a figure for how well the vaccine will work in this group. However, protection is expected, given that an immune response is seen in this age group and based on experience with other vaccines; as there is reliable information on safety in this population, EMA’s scientific experts considered that the vaccine can be used in older adults. More information is expected from ongoing studies, which include a higher proportion of elderly participants.

On the basis of EMA’s positive opinion, the Commission has verified all the elements supporting the marketing authorisation and consulted Member States before granting the conditional marketing authorisation.

The AstraZeneca vaccine is based on an adenovirus, a harmless virus which delivers the ‘instructions’ from the virus that causes COVID-19.This allows the body’s own cells to make the protein unique to the COVID-19 virus. The person’s immune system recognises that this unique protein should not be in the body and responds by producing natural defences against infection by COVID-19.

According to the contract signed with the European Commission on 27 August 2020, AstraZeneca will deliver the total amount of 400 million doses throughout 2021. These will add to the 600 million doses of the vaccine by BioNTech-Pfizer and the 160 million doses of the vaccine by Moderna.

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