Question

Typhoid fever is caused by

(a) Shigella

(b) Escherichia

(c) Giardia

(d) Salmonella.

Answer 1

Typhoid fever is an enteric fever that is most commonly caused by bacterium Salmonella typhi. Hence option D is the correct answer. The common symptoms of typhoid fever includes diarrhoea, constipation, high fever, mild headache, and weakness. The bacterium is commonly spread through intake of food or water contaminated with fecus of infected person. Hence this acute disease is found to be common in the areas with poor sanitation or hygenic conditions. According to WHO 2014 statistics, about 21 million people gets infected with typhoid fever annually worldwide. Currently two attenuated vaccines are recommended for use such as Vi-PS vaccine and Ty21a vaccine to control the outbreak of the disease. .