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Vaccines and immunization - World Health Organization (WHO)
Jan 13, 2025 · When you get a vaccine, your immune system responds. We now have vaccines to prevent more than 20 life-threatening diseases, helping people of all ages live longer, healthier lives. Immunization currently prevents 3.5 million to 5 million deaths every year from diseases like diphtheria, tetanus, pertussis, influenza and measles.
Coronavirus disease (COVID-19): Vaccines and vaccine safety
Oct 8, 2024 · While COVID-19 vaccines are highly effective against serious disease and death, no vaccine is 100% effective. Vaccinated people can get infected and may fall ill with COVID-19. This is known as a ‘breakthrough infection’ or ‘breakthrough case’. Breakthrough infections can happen with any vaccine and do not mean that the vaccine does not ...
COVID-19 vaccines - World Health Organization (WHO)
WHO’s COVID-19 dashboard also features the number of vaccine doses administered globally, with more detail provided on the dedicated COVID-19 vaccination dashboard. At a regional level, there is an AFRO COVID-19 vaccines dashboard and a …
How do vaccines work? - World Health Organization (WHO)
Dec 8, 2020 · Regardless of whether the vaccine is made up of the antigen itself or the blueprint so that the body will produce the antigen, this weakened version will not cause the disease in the person receiving the vaccine, but it will prompt their immune system to respond much as it would have on its first reaction to the actual pathogen.
The world’s first cancer vaccine trial has started. Here’s what that ...
Nov 22, 2024 · The cancer vaccine is not given to patients to prevent cancer happening, but to patients with existing tumours – making it different from other vaccines. It is designed to help our immune systems recognize what cancer cells “ look like ”.
Know the facts - World Health Organization (WHO)
Feb 3, 2025 · When you get a vaccine, your immune system responds. We now have vaccines to prevent more than 20 life-threatening diseases, helping people of all ages live longer, healthier lives. Immunization currently prevents 3.5 million to 5 million deaths every year from diseases like diphtheria, tetanus, pertussis, influenza and measles.
COVID-19 Vaccines Advice - World Health Organization (WHO)
Oct 8, 2024 · Unprecedented scientific collaborations, extensive prior research and substantial public funding enabled swift COVID-19 vaccine development to be completed in record time – while maintaining high safety standards. New versions of the vaccine are being developed as the COVID-19 virus continues to circulate and change.
Vaccines and immunization - World Health Organization (WHO)
Sep 30, 2022 · The Regional Strategic Framework for Vaccine-Preventable Diseases and Immunization in the Western Pacific 2021-2030 was developed to expand the scope of immunization, maximize the benefits of vaccines and immunization programmes, and further accelerate control, and achieve and sustain elimination of additional vaccine-preventable …
A Brief History of Vaccination - World Health Organization (WHO)
A plasma-derived inactivated vaccine is approved for commercial use from 1981 to 1990, and a genetically engineered (or DNA recombinant) vaccine, developed in 1986, is still in use today. The measles vaccine (1963) is combined with the recently developed vaccines against mumps (1967) and rubella (1969) into a single vaccination (MMR).
Statement on the antigen composition of COVID-19 vaccines
Dec 23, 2024 · The WHO Technical Advisory Group on COVID-19 Vaccine Composition (TAG-CO-VAC) continues to closely monitor the genetic and antigenic evolution of SARS-CoV-2 variants, immune responses to SARS-CoV-2 infection and COVID-19 vaccination, and the performance of COVID-19 vaccines against circulating variants. Based on these evaluations, …