Are Pfizer and Moderna mRNA vaccines?

Pfizer-BioNTech and Moderna are manufacturers associated with mRNA COVID-19 vaccines. Their products deliver temporary instructions for a selected feature of the virus, allowing the immune system to practise recognising it. The brand name does not mean the vaccine contains a live virus, and the mRNA does not enter the nucleus or change DNA.

Different formulations may be offered at different times or for different groups. Recommendations can depend on age, health conditions, previous doses, local guidance, and current product availability, so an older memory of a brand may not match the current option.

Ask the vaccinator to confirm the product name and platform before the injection. Tell them about allergies, a severe reaction to a previous dose, pregnancy, immune conditions, current illness, and medicines. Follow the schedule supplied for you, retain the vaccination record, and use the clinic's advice for managing a sore arm, fatigue, headache, or fever.

Get emergency help for difficulty breathing, swelling of the lips, face, or throat, widespread hives, collapse, or a rapidly worsening reaction. Seek prompt medical assessment for chest pain, shortness of breath, or a fast or irregular heartbeat. For other symptoms, contact a clinician if they are severe, worsening, or not improving as expected.

Ask whether the offered Pfizer-BioNTech or Moderna product is suitable for your age and health history, which dose is due, and whether earlier vaccination changes the timing. Confirm the difference between expected short-lived reactions and warning signs.