TYPHOID VACCINE Meaning and
Definition
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A typhoid vaccine is a preventive immunization designed to protect individuals from the infectious disease known as typhoid fever. Typhoid fever is caused by the bacterium Salmonella enterica serovar Typhi, which is primarily transmitted through contaminated food and water sources. This vaccine stimulates the body's immune system to develop antibodies against the bacteria, enabling the immune system to better recognize and fight the infection if exposed to it in the future.
There are two main types of typhoid vaccines: the oral live-attenuated vaccine and the injectable inactivated vaccine. The oral vaccine, also called the Ty21a vaccine, consists of live attenuated bacteria that resemble the Typhi strain but do not cause the disease. It is taken orally in the form of capsules or liquid. The injectable vaccine, known as the Vi capsular polysaccharide vaccine, is derived from the polysaccharide coating of the Salmonella bacteria. It is administered via injection.
Typically, a typhoid vaccine provides protection against typhoid fever for several years, but booster doses may be required to maintain immunity. The vaccine is recommended for individuals traveling to areas with a high risk of typhoid fever, such as certain regions of Africa, Asia, and Latin America. It may also be recommended for laboratory workers handling the bacteria or individuals who may come into close contact with infected individuals. As with any vaccine, there can be potential side effects, but they are generally mild and temporary, such as fever or soreness at the injection site. It is important to consult with a healthcare professional to determine the most appropriate typhoid vaccination strategy based on individual circumstances and travel plans.
Common Misspellings for TYPHOID VACCINE
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Etymology of TYPHOID VACCINE
The word "typhoid" is derived from the Greek word "typhos" meaning "smoke" or "haze". This term was originally used to describe a clouding or confusion of the mind, and later came to refer to a fever marked by stupor or delirium. The term "typhoid fever" was coined in the mid-19th century to describe a specific type of fever characterized by gastrointestinal symptoms.
The word "vaccine" is derived from the Latin word "vaccinus", meaning "of or from cows". This term originates from the early discovery of vaccination by Edward Jenner in the late 18th century, who observed that milkmaids who had contracted cowpox did not get infected with smallpox. Jenner devised a method of inoculating individuals with the cowpox virus to protect them against smallpox, which became known as "vaccination".
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