Question

I am a microbe which lives in polluted water. During the rainy season I make many people fall ill. I cause a disease known as typhoid. Who am I?

• A. Salmonella typhi
• B. Bacillus subtilis
• C. Escherichia coli
• D. Penicillium notatum

Answer 1

The correct option is A

Salmonella typhi

Typhoid is a water borne disease caused by Salmonella typhi. Stool of an infected person contains these lively bacteria which, through different means enters the farms or source of water like ponds or rivers etc., causing infection. It is a monsoon disease as the contaminated matter is washed away rapidly by water.