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Typhoid is the most infectious or communicable disease of India. Typhoid fever is common in humans of 1 to 15 years. Typhoid is caused by the rod- shaped and motile bacterium, called Salmonella typhi that is commonly found in the intestine of human beings. Human infection is direct.

Infection takes place by the oral route through ingestion of food, milk or water contaminated by contact with the typhoid patient. The house flies act as a transmitter of this disease. The symptoms of typhoid often appear 10 to 14 days after the infection.


1. Headache and fever rise maximum in the afternoon. The temperature increases each day in the first week.

2. Fever gradually declines during the 3rd or 4th day.

1. Proper sanitation and disposal of faecal matter prevents infection.

2. TAB-vaccination provides immunity for 3 years.

3. Oral vaccine also prevents typhoid.

There are standard drugs (e. g Chloromycetin) which cure typhoid.


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