Vaccines and immunization: What is vaccination?
Oct 22, 2025 · Vaccination is a simple, safe, and effective way of protecting you against harmful diseases, before you come into contact with them. It uses your body’s natural defenses to build …
Vaccines and immunization - World Health Organization (WHO)
Dec 18, 2025 · 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 …
COVID-19 Vaccines Advice
Oct 8, 2024 · Vaccination should not be delayed in anticipation of newer versions of the COVID-19 vaccine. Currently approved COVID-19 vaccines, including those based on the index virus and the …
Know the facts - World Health Organization (WHO)
Mar 20, 2020 · 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 …
COVID-19 vaccines - World Health Organization (WHO)
Read WHO’s Global COVID-19 Vaccination Strategy outlining the steps to achieve effective and equitable distribution of vaccines. See WHO’s landscape of COVID-19 vaccine candidates for the …
How do vaccines work? - World Health Organization (WHO)
Feb 25, 2025 · Vaccination eases the strain on families and healthcare systems by reducing hospital visits and medical costs. Healthy children can attend school regularly, learn better and grow up ready …
Vaccines and immunization: Vaccine safety
Jul 15, 2025 · Vaccination is one of the most effective ways to prevent diseases. Over the past 50 years, essential vaccines against just 14 diseases have saved at least 154 million lives (1). During the same …
A Brief History of Vaccination - World Health Organization (WHO)
For centuries, humans have looked for ways to protect each other against deadly diseases. From experiments and taking chances to a global vaccine roll-out in the midst of an unprecedented …
Statement on the antigen composition of COVID-19 vaccines
May 15, 2025 · The TAG-CO-VAC reconvened on 6-7 May 2025 to review the genetic and antigenic evolution of SARS-CoV-2; immune responses to SARS-CoV-2 infection and/or COVID-19 …
Vaccine efficacy, effectiveness and protection
Mar 10, 2025 · Following the recommended vaccination schedule is essential effective and sustained protection. Boosters Protection from the initial dose or primary series may weaken over time. Booster …