Safety - Moderna COVID-19 vaccine

All vaccines are tested for safety and effectiveness before they can be used. The HSE only uses a vaccine if it meets the required standards of safety and effectiveness.

Moderna COVID-19 vaccine protection

The second COVID-19 vaccine to be approved for use in Ireland was the Moderna COVID-19 vaccine.

The official name for Moderna's COVID-19 vaccine is 'Spikevax.' But most people call it 'Moderna'.

Trials have shown that the Moderna vaccine is 94.5% efficacious. This means that 94.5% of people who got this vaccine in the trial were protected from COVID-19. This vaccine has been tested on people aged 18 and older.

How COVID-19 mRNA vaccines work

Moderna is an mRNA vaccine. mRNA vaccines teach your body how to make a protein that will trigger an immune response, without using the live virus that causes COVID-19.

Read about how COVID-19 mRNA vaccines work

How COVID-19 vaccines were developed quickly

The work to develop COVID-19 vaccines moved much faster than usual to make them available as soon as possible.

Read about COVID-19 vaccine development

Ingredients of Moderna COVID-19 vaccine

The Moderna COVID-19 vaccine does not contain eggs, preservatives or latex.

For a full list of ingredients, read the patient information leaflet for the COVID-19 Moderna vaccine.

This content was fact checked by vaccine experts working in Ireland.

Last updated: 25 June 2021 at 10.50am