2024年4月23日 · Vaccine ingredients can look unfamiliar when they are listed on a label. However, many of the components used in vaccines occur naturally in the body, in the environment, and in the foods we eat. All of the ingredients in vaccines – as well as the vaccines themselves - are thoroughly tested and monitored to ensure they are safe.

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 ...

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 …

16 小时之前 · 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.

2024年10月8日 · 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.

2020年12月8日 · 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.

2022年9月30日 · 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 …

2025年2月11日 · 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.

2020年12月8日 · The vaccine is next given to thousands of volunteers – and compared to a similar group of people who didn’t get the vaccine, but received a comparator product – to determine if the vaccine is effective against the disease it is designed to protect against and to study its safety in a much larger group of people.

2020年3月30日 · Before any vaccine is introduced in a country, the vaccine developed in the laboratory undergoes rigorous and stringent testing through multiple phases of clinical trials. Health authorities carefully evaluate the results of these trials to help ensure that the vaccine meets the highest safety and efficacy standards before being considered ...