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Pre-exposure prophylaxis (PrEP), is the use of medications to prevent the spread of disease in people who have not yet been exposed to a disease-causing agent. Vaccination is the most commonly used form of pre-exposure prophylaxis; other forms of pre-exposure prophylaxis generally involve drug treatment, known as chemoprophylaxis.
Tick-borne encephalitis vaccine is a vaccine used to prevent tick-borne encephalitis (TBE). [4] The disease is most common in Central and Eastern Europe, and Northern Asia. [4] More than 87% of people who receive the vaccine develop immunity. [5] It is not useful following the bite of an infected tick. [4] It is given by injection into a muscle ...
Anti-idiotypic vaccines consist of antibodies that have three-dimensional immunogenic regions, termed idiotopes, that consist of protein sequences that bind to cell receptors. Idiotopes are aggregated into idiotypes specific to their target antigen.
[3] [4] Vaccines are categorised into conventional and next generation vaccines. [5] [6] Animal vaccines have been found to be the most cost effective and sustainable methods of controlling infectious veterinary diseases. [6] In 2017, the veterinary vaccine industry was valued at US$7 billion and it is predicted to reach US$9 billion in 2024. [7]
Vi-rEPA vaccine, a new conjugate form of the injectable Vi vaccine, may be more effective and prevents the disease in many children under the age of five years. [9] In a trial in 2-to-5-year-old children in Vietnam, the vaccine had more than 90 percent efficacy in the first year and protection lasted at least four years.
The successor to PDVI, the Dengue Vaccine Initiative was an IVI-led consortium with the World Health Organization, the Sabin Vaccine Institute, the Initiative for Vaccine Research (IVR), and the International Vaccine Access Center (IVAC) at Johns Hopkins University. DVI continued the work of PDVI and focused on laying the groundwork for dengue ...
An attenuated vaccine (or a live attenuated vaccine, LAV) is a vaccine created by reducing the virulence of a pathogen, but still keeping it viable (or "live"). [1] Attenuation takes an infectious agent and alters it so that it becomes harmless or less virulent. [2] These vaccines contrast to those produced by "killing" the pathogen ...
The Vi capsular polysaccharide vaccine (or ViCPS) is a typhoid vaccine recommended by the World Health Organization for the prevention of typhoid (another is Ty21a).The vaccine was first licensed in the US in 1994 and is made from the purified Vi capsular polysaccharide from the Ty2 Salmonella Typhi strain; it is a subunit vaccine.