Question

Mention any three human diseases caused by bacteria.

Answer 1

Bacteria: These are infectious unicellular, prokaryotic, infectious microscopic organisms.

Diseases caused by bacteria include Typhoid, Diarrhoea, and Tuberculosis.

1. Typhoid: It is caused by the bacteria Salmonella typhi which is transmitted to the healthy person by intake of contaminated food. Symptoms: Headache, Fever, Diarrhoea, and rashes on the abdomen.
2. Cholera: It is caused by the bacteria Vibrio cholerae which is transmitted to a healthy person by intake of contaminated food and water. Symptoms: Vomiting, dehydration, weight loss, muscle cramps, and diarrhea.
3. Tuberculosis: It is caused by Mycobacterium tuberculosis which is transmitted to a healthy person by droplet infection.Symptoms: Loss of appetite, weakness in the body, breathlessness, and pain in the chest.