Correct Answer: Typhoid

Solution : The correct answer is Typhoid.

Widal Test is used to detect Typhoid fever. It is also known as enteric fever. It is caused by the bacteria Salmonella typhi and it spreads through contaminated water and food. It is characterised by high fever and dysentry.  Widal test is a blood test invented by Georges-Fernand Widal and it detects antibodies created in the body against typhoid fever.