Question

Which of the following disease is not transmitted by house flies ?

• A. Typhoid
• B. Yellow fever
• C. Cholera
• D. Dysentry

Answer 1

The correct option is B

Yellow fever

The correct answer is Option B: Yellow fever

Explanation of correct option:

1. Yellow fever is a viral bleeding disease (haemorrhagic disease) caused by the mosquito bites named Aedes aegypti mosquito.
2. Fever, headache, jaundice, muscular soreness, nausea, vomiting, and drowsiness are all symptoms of yellow fever.

Explanation of incorrect options:

Option A: Typhoid

1. Typhoid is a food-borne or water-borne disease that occurs by consumption of contaminated food or water.
2. It is caused by a bacteria called Salmonella typhi and is spread through house flies.

Option C: Cholera

1. Cholera is also a water-borne disease that is induced by the contamination of water and is often spread by house flies.
2. The bacterium responsible is Vibrio cholerae.

Option D: Dysentry

1. An infection of the gut causes dysentery where the feces does not solidify and may contain blood and mucous. Often, it is caused by a bacterial or parasitic infection.
2. Consumption of contaminated water or food causes infection and is carried by house flies.

Final answer: Yellow fever is not transmitted by house flies.