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What is Typhoid?
What is the cause of typhoid?
How is it spread?
What are the symptoms of the illness?
How is it diagnosed?
How is it treated?
How can it be prevented?
Thu,18 Nov 2004 05:30:00 +0530
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  • What is Typhoid?
    Thu,18 Nov 2004 05:30:00
    Typhoid is also known as enteric fever or salmonellosis. It is an infectious disease and is a very common cause of persistent high grade fever.
  • What is the cause of typhoid?
    Thu,18 Nov 2004 05:30:00
    Typhoid is a bacterial disease caused by Salmonella typhi. A related bacterium called Salmonella paratyphi causes paratyphoid fever. The disease is transmitted by contaminated food or water.
  • How is it spread?
    Thu,18 Nov 2004 05:30:00
    These bacteria can live within the gall bladders of some human beings without causing disease for years. These carriers can pass these bacteria in their faeces (stools) and if the carrier happens to be a food handler, the disease may spread to a large number of people. The illness can also be spread by a contaminated water supply. Since the bacteria are passed in the stools of the carriers as well as patients afflicted with acute illness, any contamination of the water supply with sewage can spread the disease in epidemic proportions.
  • What are the symptoms of the illness?
    Thu,18 Nov 2004 05:30:00
    Fever is the main symptom that gradually increases over four to five days. The fever is high grade (up to 40.5ºC or 105ºF) and almost continuous unless some fever-relieving drugs (antipyretics) are taken. The appetite is poor and the patient feels weak. The liver and spleen become enlarged. In serious cases perforation of the intestines may occur in a few cases.
  • How is it diagnosed?
    Thu,18 Nov 2004 05:30:00
    The patient is examined along with a detailed history of complaints. The patient’s blood is cultured and the causative bacteria can be grown. Their identification and sensitivity to antibiotics is done in the laboratory. This helps in the selection of an effective antibiotic used for treatment. After the second week of illness, antibodies against the bacteria develop and they can be detected in the blood by a test called the Widal test. This test gives equivocal results in the early stages of the disease.
  • How is it treated?
    Thu,18 Nov 2004 05:30:00
    A number of antibiotics are available to treat typhoid. Chloramphenicol was an effective drug of the past but is rarely used now due to antibiotic resistance. The newer antibiotics (ciprofloxacin and ofloxacin) are the mainstay of treatment. Recently, resistance of the bacteria to these medicines has been observed in a few cases. In addition to antibacterial drugs, supportive treatment like a soft diet and antipyretics to keep the fever down are needed. In severe cases, the patient may need hospitalisation. If complications like intestinal perforation occur, emergency surgery may be required.
  • How can it be prevented?
    Thu,18 Nov 2004 05:30:00

    Typhoid is prevalent where sanitary conditions are poor. Therefore, a proper water supply and waste disposal system is essential for the prevention of this disease. Safe water for drinking and kitchen use is important. Food should be hygienically prepared and stored. Flies and cockroaches can spread the disease and must be dealt with effectively. Persons handling food should be periodically examined, and their stool examination done.

    Vaccines are available for protection against typhoid. The older TAB vaccine is no longer used. Newer oral and injectable vaccines are widely available and provide immunity for approximately two years. The immunity due to the vaccines needs to be boosted every two years by repeat doses.

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