An 11-year-old boy has been diagnosed with typhoid. Which of the following may be the cause of this disease in the boy?
A
Consumption of unhygienic food
B
Biting of mosquito
C
Direct contact with blood
D
Abnormal growth of cells in body
Correct Option:
A
Explanation
Typhoid fever is caused by Salmonella Typhi and is usually transmitted by the faecal–oral route, particularly through food or water contaminated by infected material. Mosquito bites cause diseases such as malaria or dengue, not typhoid. Direct contact with blood is also not its usual mode of transmission.
