Suitability for COVID-19 vaccination based on prior allergy or current dietary practices

Eimear Maguire, Senior Medicines Information Pharmacist, North West Medicines Information CentrePublished Last updated See all updates

Prior allergy and religious or other dietary requirements could occasionally affect suitability for vaccination, and patients will often have questions.

Key points

Allergic reactions to vaccines are possible based on previous allergy.

In addition, patients may ask about their suitability for vaccination based on religious or other dietary requirements or beliefs.

We’ve created a series of articles to help you advise patients when they need advice on individual vaccine suitability.

Prior allergy to COVID-19 Vaccine

Where patients have had an allergic reaction to the first dose of any COVID-19 vaccine, options for the second dose will vary dependent on the nature of the initial reaction.

Our decision tool below guides you through these options. It is derived from Public Health England’s Immunisation Against Infectious Disease (The Green Book): Flowchart for managing patients who have allergic reactions to the first dose of COVID-19 vaccine.

COVID-19 Vaccine Prior Allergy Decision Tool

Advice end-points

Given the nature of the previous reaction, you should seek advice from a specialist before proceeding.

The patient can have the second dose using the same vaccination in any vaccination setting.

Observe the patient for 30 minutes after they’ve received the vaccine.

The patient can have the second dose using the same vaccination in any vaccination setting.

Consider pre-treatment with a non-sedating oral antihistamine 30 minutes beforehand.

Change history

  1. COVID-19 Vaccine Prior Allergy Decision Tool added.

  2. Published