# Vaccine safety – patient factsheet

Source: https://www.keypedia.com/records/uk_mhra_guidance/uk-mhra/5a87f698-6e1c-436b-b604-e647242928f4
Type: Guidance
Published: December 2, 2025

> This summary describes a patient-oriented factsheet published by the UK Medicines and Healthcare products Regulatory Agency (MHRA) regarding vaccine safety and usage. The document emphasizes that vaccines represent a highly effective method for protecting individuals and the wider community from harmful infectious diseases. Contrary to a traditional inspection report, this text does not mention a specific company, inspection dates, or regulatory violations. Instead, it underscores the rigorous testing and continuous monitoring protocols that characterize the regulatory framework for vaccine approval. Key topics addressed include the composition and types of vaccines, their mechanism of action within the immune system, and the manufacturing processes involved. A critical component of the guidance is the instruction for patients to report any adverse reactions via the Yellow Card scheme, which allows for ongoing safety surveillance. The document serves as an educational resource to improve public understanding of immunization, explaining why vaccines are vital for reducing the spread of serious illness. There are no required corrective actions or enforcement measures specified, as the text is purely informational. By providing a glossary of terms and detailed explanations of side effects, the MHRA aims to foster informed decision-making among patients regarding their healthcare and participation in vaccination programs.

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## Content

Vaccines are one of the safest and most effective ways to protect yourself and others from harmful diseases. Vaccines are rigorously tested before being approved for use and are continuously monitored to ensure their safety and effectiveness. By getting vaccinated, you help to reduce the spread of infections and protect yourself and others from serious diseases. This factsheet is designed to help patients understand more about vaccines, including the following: Uses of vaccines What is in vaccines Types of vaccines How vaccines work Why vaccines are important How vaccines are made Vaccine side effects Report side effects to the Yellow Card scheme Glossary of terms

## Attachments

- [Vaccine safety – patient factsheet ](/government/publications/vaccine-safety-patient-factsheet/vaccine-safety-patient-factsheet)