Which one of the following is not a viral disease?
(a) Dengue
(b) AIDS
(c) Typhoid
(d) Influenza
Answer: C
Solution:
Infectious diseases are caused by infectious agents which are classified based on the typical characteristics of the organisms. These organisms that cause disease are found in viruses, bacteria, fungi, and single-celled and multi-cellular organisms.
Influenza, AIDS and Dengue are some examples of diseases caused by Viruses.
Typhoid fever is caused by bacteria called Salmonella typhi.
Hence, C option is the correct answer.