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Information and public services for the Island of Jersey

L'înformâtion et les sèrvices publyis pouor I'Île dé Jèrri

Adverse reactions to COVID-19 vaccinations (FOI)

Adverse reactions to COVID-19 vaccinations (FOI)

Produced by the Freedom of Information office
Authored by Government of Jersey and published on 16 December 2021.
Prepared internally, no external costs.


Please provide details of the number of adverse reactions to Covid-19 vaccinations registered in Jersey. If possible, please provide this information broken down according to whether the reaction came from the first, second or third dose and whether it was Moderna, Pfizer or AztraZeneca.


Suspected adverse reactions (ADRs) reported for the COVID-19 mRNA Pfizer / BioNTech vaccine, the COVID-19 Vaccine AstraZeneca and the COVID-19 Vaccine Moderna is provided via the MHRA Coronavirus vaccine - weekly summary of Yellow Card reporting.

Coronavirus vaccine - weekly summary of Yellow Card reporting - GOV.UK (

Reported side effects are reported by the Medicines & Healthcare products Regulatory Agency (MHRA). Please note that Jersey uses, and has always used, the MHRA yellow card system because that provides the best data source - large numbers and a reliable source of any signals. The MHRA yellow card system records and publishes all events that may be associated with vaccines and medicines. They do not necessarily imply or reflect a causal link. The possibility of a causal link is then sought within this data by the MHRA. If there is an association, this is published and used to modify use or simply create an alert depending on the situation. Data reported by the MHRA is not broken down by region.

Further information is publicly available on in response to the previous Freedom of Information request below. Article 23 of the Freedom of Information (Jersey) Law 2011 has been applied.

Deaths and side effects linked to the COVID-19 vaccine (FOI)

Article applied

Article 23 - Information accessible to applicant by other means

(1) Information is absolutely exempt information if it is reasonably available to the applicant, otherwise than under this Law, whether or not free of charge.

(2) A scheduled public authority that refuses an application for information on this ground must make reasonable efforts to inform the applicant where the applicant may obtain the information.

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