Influenza or flu is a respiratory disease that results from a viral infection and is extremely infectious and spreads by droplets of respiration. While talking or by physical contact, such
Common cold, also known as simple cold, is an upper respiratory tract viral infectious disease that mainly affects the respiratory mucosa of the nose, mouth, sinuses, and larynx. Less than
A common viral infection is cold sores, also called fever blisters. They are tiny blisters on and around your lips that are fluid-filled. In patches, these blisters are always grouped