Multiple choice Which of the following diseases are called viral diseases? Dengue, influenza and typhoid Common cold, typhoid and anthrax Anthrax, influenza and typhoid Anthrax, common cold and influenza Common cold, influenza and dengue Reveal answer Fill a bubble to check yourself E Correct answer Explanation All these are caused by viruses. Common cold, influenza and dengue are viral diseases. Thus, this option is correct.