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Influenza Vaccine. Vaccine efficacy or vaccine effectiveness is the percentage reduction of disease cases in a vaccinated group of people compared to an unvaccinated group.For example, a vaccine efficacy or effectiveness of 80% indicates an 80% decrease in the number of disease cases among a group of vaccinated people compared to a group in which nobody was vaccinated.
Number needed to vaccinate (NNV) is a metric used in the evaluation of vaccines, [1] [2] [3] and in the determination of vaccination policy. It is defined as the average number of patients that must be vaccinated to prevent one case of disease. It is a specific application of the number needed to treat metric (NNT).
Vaccines led to the eradication of smallpox, one of the most contagious and deadly diseases in humans. [42] Other diseases such as rubella, polio, measles, mumps, chickenpox, and typhoid are nowhere near as common as they were a hundred years ago thanks to widespread vaccination programs. As long as the vast majority of people are vaccinated ...
A genetic vaccine (also gene-based vaccine) is a vaccine that contains nucleic acids such as DNA or RNA that lead to protein biosynthesis of antigens within a cell. Genetic vaccines thus include DNA vaccines , RNA vaccines and viral vector vaccines .
The Ervebo vaccine, developed by Merck, is a single-dose vaccine. It works by using a modified virus to produce antibodies against Ebola, equipping the immune system to recognise and neutralise ...
Vaccine Safety Net (VSN) is a global network of websites aimed at helping people judge the quality of online information on vaccine safety. It was established in 2003 by the World Health Organization (WHO), which had previously set up the independent Global Advisory Committee on Vaccine Safety (GACVS), prompted by concern from public health officials regarding the dissemination of potentially ...
Here’s why Dr. Leana Wen recommends people get the new RSV vaccines available for older people, pregnant people and infants. ... this is a very good level of protection, and people at risk for ...
Autogenous vaccines are also a good and quick alternative when there are no vaccines for a novel emerging disease or a relatively uncommon disease or a relatively uncommon species. This type of vaccine can also be used when there is antigenic variability within the same bacterial species such that conventional vaccines cannot provide specific ...