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- Vaccines and immunization: What is vaccination?
The vaccine is therefore a safe and clever way to produce an immune response in the body, without causing illness Our immune systems are designed to remember Once exposed to one or more doses of a vaccine, we typically remain protected against a disease for years, decades or even a lifetime This is what makes vaccines so effective
- Vaccines and immunization - World Health Organization (WHO)
Vaccination is a simple, safe, and effective way of protecting people against harmful diseases, before they come into contact with them It uses your body’s natural defences to build resistance to specific infections and makes your immune system stronger
- How do vaccines work? - World Health Organization (WHO)
This article is part of a series of explainers on vaccine development and distribution Learn more about vaccines – from how they work and how they’re made to ensuring safety and equitable access – in WHO’s Vaccines Explained series
- COVID-19 vaccines - World Health Organization (WHO)
The COVID-19 global health emergency saw the fastest vaccine rollout the world has ever seen Now it’s time to share just how remarkable that journey really was The Delivery is a tool that allows you to explore the stories, statistics, and determination that underpin it all Explore the triumphs and breakthroughs that kept us moving forward, perfectly preserving the efforts of our
- Coronavirus disease (COVID-19): Vaccines and vaccine safety
This page answers the most frequently asked questions about COVID-19 vaccines and vaccine safety If the information you are looking for is not here, check out our related links on the right-hand side of the page
- Recommendations for influenza vaccine composition for the 2026-2027 . . .
The World Health Organization (WHO) today announced recommendations for the viral composition of influenza (or “flu”) vaccines for the 2026-2027 northern hemisphere influenza season The announcement was made following a 4-day consultation examining global influenza surveillance data
- Vaccines and immunization: Vaccine safety
Together with governments, vaccine manufacturers, scientists and medical experts, WHO's vaccine safety programme is constantly helping monitor the safety of vaccines This helps ensure that vaccines are safe for you and your family How do we know that a vaccine is safe?
- Know the facts - World Health Organization (WHO)
Vaccination is a simple, safe, and effective way of protecting people against harmful diseases, before they come into contact with them It uses your body’s natural defences to build resistance to specific infections and makes your immune system stronger
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