Vaccines and immunization: What is vaccination?
2024年4月23日 · Vaccines protect us throughout life and at different ages, from birth to childhood, as teenagers and into old age. In most countries you will be given a vaccination card that tells you what vaccines you or your child have had and when the next vaccines or booster doses are due. It is important to make sure that all these vaccines are up to date.
COVID-19 vaccines - World Health Organization (WHO)
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.
Vaccines and immunization - World Health Organization (WHO)
2024年11月19日 · Vaccines are also critical to the prevention and control of infectious disease outbreaks. They underpin global health security and are a vital tool in the battle against antimicrobial resistance. The COVID-19 pandemic strained health systems, resulting in …
Coronavirus disease (COVID-19): Vaccines and vaccine safety
2024年10月8日 · Protein-based vaccines: These contain harmless fragments of proteins or protein shells that mimic the COVID-19 virus to safely generate an immune response, Viral vector vaccines: These use a safe virus that cannot cause disease but serves as a vehicle to produce coronavirus proteins to generate an immune response, and
COVID-19 Vaccines Advice - World Health Organization (WHO)
2024年10月8日 · COVID-19 vaccines are safe. Strict precautions are in place to help ensure the safety of all COVID-19 vaccines. Before receiving validation from WHO and national regulatory agencies, COVID-19 vaccines were subject to rigorous testing in clinical trials to prove that they meet internationally agreed benchmarks for safety and efficacy.
How do vaccines work? - World Health Organization (WHO)
2020年12月8日 · Some vaccines require multiple doses, given weeks or months apart. This is sometimes needed to allow for the production of long-lived antibodies and development of memory cells. In this way, the body is trained to fight the specific disease-causing organism, building up memory of the pathogen so as to rapidly fight it if and when exposed in the ...
COVID-19 vaccine tracker and landscape - World Health …
2023年3月30日 · To ensure the latest information is available, the landscape will be updated twice a week (Tuesday and Friday, 17:00 CET) by searching, gathering and cross-checking data from multiple sources such as the Cochrane vaccine mapping tool, PubMed, ClinicalTrials.gov, WHO ICTRP and from a network of researchers and industry for new candidate vaccines ...
A Brief History of Vaccination - World Health Organization (WHO)
Early experiments with influenza vaccines are carried out: the US Army Medical School tests 2 million doses in 1918, but results are inconclusive. Read more about the history of Influenza vaccination. In 1937 Max Theiler, Hugh Smith and Eugen Haagen develop the 17D vaccine against yellow fever. The vaccine is approved in 1938 and over a million ...
Know the facts - World Health Organization (WHO)
2024年12月16日 · Vaccines train your immune system to create antibodies, just as it does when it’s exposed to a disease. However, because vaccines contain only killed or weakened forms of germs like viruses or bacteria, they do not cause the disease or put you at risk of its complications. Vaccines protect against many different diseases, including:
Explainers - World Health Organization (WHO)
2021年2月19日 · The effects of virus variants on COVID-19 vaccines. 31 March 2021. Safety of COVID-19 Vaccines. 31 March 2021.