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Cold sores are not caused by organisms, they are caused by a virus called oral herpes.
A cold sore is caused by a virus.
Cold sores aren't caused by a fungus, but by a virus.
Cold sores are caused by the herpes virus, not by the HIV virus.
Cold sores are caused by a virus HSV-type 1.Yes oral herpes is a viral infection.
Cold sores are caused by the herpes virus (HSV-Type 1).
Bacteria do not cause the common cold. It is caused by a virus.
They are caused by a virus.
The common cold is caused by a virus passed from person to person. This rhinovirus is the virus that causes the common cold.
Cold sores are caused by the herpes simplex virus type 1.
e.g cold
One is caused by an allergic reaction, one is caused by a virus