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Internet-based surveys provide a possible approach to monitor the security of novel vaccines

Internet-based surveys are a possible means of quickly accumulating drug security information on novel vaccines when they’re rolled out rapidly over a big space, in response to a brand new European research involving the UK’s main drug security unit.

The research, carried out in seven European international locations, aimed to prospectively monitor the security of the COVID-19 vaccines as they had been rolled out at scale.

Contributors accomplished questionnaires for a minimum of six months following the primary dose of COVID-19 vaccine. Information on potential antagonistic reactions to the vaccine was captured, pooled and crucially, made accessible in near-real time to researchers. This allowed present charges of antagonistic reactions to be usually up to date because the vaccines had been launched throughout Europe and in flip supplied precious security information for healthcare professionals, regulatory authorities, and most people.

The research’s authors imagine that this method to security monitoring could possibly be used for future vaccine rollouts, offering fast security information to help expedited public well being decision-making.

The Drug Security Analysis Unit was invited to guide the UK arm of the research.

Professor Saad Shakir, Director of the Drug Security Analysis Unit, stated: “When the primary COVID-19 vaccines turned accessible a big scale roll out was wanted to make sure individuals obtained this very important remedy. To make sure this was achieved safely, the introduction of a monitoring system in a number of international locations for fast information assortment, was desperately wanted.

“We now have proven that on-line reporting is a possible means of accumulating information from individuals in actual life circumstances. These affected person reported outcomes are essential as a result of they embrace info on antagonistic reactions that may not be present in medical data as sufferers who expertise short-term, non-serious reactions wouldn’t sometimes seek the advice of a healthcare skilled. This method is effectively suited to monitoring security of vaccines at first of roll-out when giant databases appropriate for retrospective security research aren’t but accessible.”

Within the research, printed in Drug Security, 117,791 members from seven European international locations had been recruited.

The vast majority of the respondents obtained the AstraZeneca vaccine (75.9%), adopted by BioNTech/Pfizer (12.4%), Moderna (9.6%), and Janssen (2.1%).

Fatigue, headache and injection-site ache had been essentially the most generally reported antagonistic reactions.

Charges of antagonistic occasions of particular curiosity (AESIs) had been 0.1–0.2% throughout all vaccine manufacturers and severe reactions or AESIs had been unusual, in step with these reported on product labels.

The research, led by Monika Raethke of Lareb, the Netherlands Pharmacovigilance Centre, had limitations, which embrace counting on people to finish questionnaires and that members who skilled an antagonistic rection could be extra prone to proceed their participation longer than those that skilled no antagonistic response. In addition they recognise that as a result of completely different velocity with which vaccines had been deployed in several international locations, information assortment the place vaccines had been rolled out earlier than the research began led to sure populations that had been vaccinated early on within the course of, not being included.

The collaboration obtained funding from a number of sources, together with the European Medicines Company (EMA), with information assortment in some international locations funded by the nation’s authorities.

Remaining outcomes and evaluation from the research, together with information from subsequent vaccine doses, might be printed in the end.


Drug Security Analysis Unit

Journal reference:

Raethke, M., et al. (2023) Cohort Occasion Monitoring of Opposed Reactions to COVID-19 Vaccines in Seven European International locations: Pooled Outcomes on First Dose. Drug Security.



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