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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
Counting the impact of vaccines
Apr 22, 2021 · In 2019, measles cases increased in countries where it had been previously eliminated, partially due to low vaccination rates among travelers. 5 Immunization can help us …
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). …