Vaccines and immunization: What is vaccination?
Apr 23, 2024 · Vaccination is safe and side effects from a vaccine are usually minor and temporary, such as a sore arm or mild fever. More serious side effects are possible, but extremely rare. Any licensed vaccine is rigorously tested across multiple phases of trials before it is approved for use, and regularly reassessed once it is introduced.
Vaccines and immunization - World Health Organization (WHO)
Nov 26, 2024 · 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 resistance to specific infections and makes your immune system stronger.
COVID-19 Vaccines Advice - World Health Organization (WHO)
Oct 8, 2024 · The duration of protection can vary depending on vaccination history, past infection, the type of vaccine received and circulating COVID-19 variants. It is still possible to get COVID-19 and spread it to others after being vaccinated, so continue to do everything you can to keep yourself and others healthy.
COVID-19 vaccines - World Health Organization (WHO)
Major progress has been made with the COVID-19 vaccination response, and it is critical to continue the progress, particularly for those most at risk of disease. WHO recommends a simplified single-dose regime for primary immunization for most COVID-19 vaccines which would improve acceptance and uptake and provide adequate protection at a time ...
How do vaccines work? - World Health Organization (WHO)
Dec 8, 2020 · Over many years and several decades, polio vaccination, using routine immunization visits and mass vaccination campaigns, has taken place in all continents. Millions of people, mostly children, have been vaccinated and in August 2020, the African continent was certified wild poliovirus free, joining all other parts of the world except Pakistan ...
Coronavirus disease (COVID-19): Vaccines and vaccine safety
Vaccination in the mid-second trimester maximizes protection. Additionally, COVID-19 vaccines can be safely administered with other vaccines recommended during pregnancy (for example, seasonal influenza and maternal respiratory syncytial virus vaccine).
Vaccines and immunization: Vaccine safety - World Health …
Health events are most often found to be coincidental, i.e., entirely unrelated to vaccination. Sometimes, events are related to how the vaccine has been stored, transported or administered (for instance, errors are made in preparing the vaccine). Such errors can be prevented by training health workers and strengthening vaccination programmes.
Know the facts - World Health Organization (WHO)
Jan 14, 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 resistance to specific infections and makes your immune system stronger.
Immunization, Vaccines and Biologicals - World Health …
The Immunization, Vaccines and Biologicals department is responsible for targeting vaccine-preventable diseases, guiding immunization research and establishing immunization policy.
A Brief History of Vaccination - World Health Organization (WHO)
The scientists show that vaccination reduces the rates at which children get sick from 15.1 per 100 children to 2.3 per 100. By 1945, the first influenza vaccine is approved for military use, followed in 1946 by an approval for civilian use.