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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
- COVID-19 vaccines - World Health Organization (WHO)
Vaccine target product profile WHO has published the target product profiles for COVID-19 vaccines, which describes the preferred and minimally acceptable profiles for human vaccines for long term protection of persons at high ongoing risk of COVID-19, and for reactive use in outbreak settings with rapid onset of immunity
- 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 announced for influenza vaccine composition for the . . .
The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2025–2026 influenza season in the northern hemisphere The announcement was made at an information session at the end of a 4-day meeting on the Composition of Influenza Virus Vaccines, a meeting that is held twice annually
- Vaccines and immunization: Vaccine safety
Vaccination is one of the best ways to prevent diseases Over the past 50 years, essential vaccines saved at least 154 million lives (1) During the same period, vaccination has reduced infant deaths by 40% 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
- Vaccine efficacy, effectiveness and protection
Vaccine protection and timing Vaccines work by building strong protection against disease Some vaccines require only one dose to build protection, while others need multiple doses spaced apart – called the primary series – to develop full protection
- 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
- Global vaccine market report 2024 - World Health Organization (WHO)
Global Vaccine Market report (Final) - 2024 The year 2024 marked the 50-years anniversary of the Expanded Programme on Immunization: over 150 million lives have been saved over these past 50 years and 40% of the reduction in infant deaths globally has been due to vaccination
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