Which of the following communicable diseases is caused by bacteria?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Cholera.
Cholera is a communicable disease caused by the bacterium Vibrio cholerae. It is an acute diarrheal illness that spreads primarily through contaminated water and food. When a person consumes water or food infected with the bacteria, the toxin produced by Vibrio cholerae leads to severe watery diarrhea and dehydration. Cholera is often associated with poor sanitation and inadequate access to clean drinking water. If untreated, it can cause rapid fluid loss and can be fatal. Preventive measures include improving water quality, sanitation, and hygiene, along with timely treatment using oral rehydration therapy and antibiotics in severe cases.
Other options:
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Dengue: Caused by the dengue virus, transmitted by Aedes mosquitoes.
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Malaria: Caused by Plasmodium parasites and transmitted through Anopheles mosquito bites.
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Influenza: Caused by the influenza virus, leading to respiratory infections.