Which virus is commonly associated with cold sores?

The virus commonly associated with cold sores is Herpes simplex virus type 1 (HSV-1). This virus is known for causing recurrent infections that result in painful blisters or sores, primarily around the lips and mouth. The infectious nature of HSV-1 leads to outbreaks triggered by factors like stress, sunlight, or a weakened immune system.

HSV-1 is highly contagious and can be transmitted through direct contact with an infected sore or even through saliva when no symptoms are present. This is why cold sores caused by this virus are so prevalent in the general population.

In contrast, the other viruses listed do not typically cause cold sores. HIV is related to immune system compromise, Mumps primarily affects the parotid glands and is not linked to cold sores, and Coxsackievirus can cause a range of diseases but does not specifically cause the herpes sores associated with HSV-1.