Search results
Results from the WOW.Com Content Network
Typhoid vaccines are vaccines that prevent typhoid fever. [1] [2] [3] Several types are widely available: typhoid conjugate vaccine (TCV), Ty21a (a live oral vaccine) and Vi capsular polysaccharide vaccine (ViPS) (an injectable subunit vaccine). They are about 30 to 70% effective in the first two years, depending on the specific vaccine in ...
Although vaccination programs for typhoid have proven effective, they alone cannot eliminate typhoid fever. [39] Combining vaccines with public health efforts is the only proven way to control this disease. [39] Since the 1990s, the WHO has recommended two typhoid fever vaccines. The ViPS vaccine is given by injection and the Ty21a by capsules.
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.
Ty21a is a live attenuated bacterial vaccine that protects against typhoid.First licensed in Europe in 1983 and in the United States in 1989, it is an orally administered, live-attenuated Ty2 strain of S. Typhi in which multiple genes, including the genes responsible for the production of Vi, have been deleted so as to render it harmless but nevertheless immunogenic.
The name comes from the Greek tûphos (τῦφος), meaning 'hazy' or 'smoky' and commonly used as a word for delusion, describing the state of mind of those infected. [7] While typhoid means 'typhus-like', typhus and typhoid fever are distinct diseases caused by different types of bacteria, the latter by specific strains of Salmonella typhi. [8]
2003 – First vaccine for Argentine hemorrhagic fever. [16] 2006 – First vaccine for human papillomavirus (which is a cause of cervical cancer) 2006 – First herpes zoster vaccine for shingles; 2011 – First vaccine for non-small-cell lung carcinoma (comprises 85% of lung cancer cases) 2012 – First vaccine for hepatitis E [17]
The vaccine for Lyme disease, which causes infections that are transmitted to humans through ticks, has shown a "strong immune response" in a mid-stage study in both children and adolescents a ...
The Typhoid Board determined that during the war, more soldiers died from this disease than from yellow fever or from battle wounds. The board promoted sanitary measures including latrine policy, disinfection, camp relocation, and water sterilization, but by far the most successful antityphoid method was vaccination, which became compulsory in ...