What should you know about BioNTech SARS-CoV-2 mRNA vaccine?

The vaccine contains messenger RNA, a temporary set of instructions that helps cells make a harmless piece of the virus. Your immune system responds to that piece and develops memory. The messenger RNA is then broken down; it does not alter your genes. Protection develops after vaccination and can vary with age, health, previous infection, and circulating virus variants.

Tell the vaccinator about previous severe allergic reactions, current illness, pregnancy, immune problems, and medicines. Remain for the advised observation period after the injection. A sore arm, tiredness, headache, muscle aches, chills, or fever can occur and usually settle over a short time. Rest, drink fluids, and use a medicine only if a clinician or pharmacist says it is suitable for you.

Get emergency help for trouble breathing, swelling of the face or throat, widespread hives, fainting, or sudden severe weakness after vaccination. Seek medical advice for chest pain, shortness of breath, a racing or irregular heartbeat, or symptoms that are severe, worsening, or not settling. Do not delay urgent care while trying to decide whether a reaction is vaccine-related.

Ask whether vaccination should be delayed because of your current illness, which reactions need immediate attention, and how your other medicines or immune condition may affect the recommended schedule.