Parasites can carry and transmit viruses, but they do not "cause" them.
Because they are obligate parasites
viruses are considered parasites (obligate parasites) because they cannot exist on their own. they need the host cell's machinery to reproduce so they cannot "survive" (technically not living) outside the cell.
Viruses are cellular parasites.
Viruses
No; viruses are sub-Cellular 'virons', while parasites are frequently multi-cellular organisms.
Infection of the skin itself by bacteria, viruses, fungi, or parasites is the most common cause of skin lesions.
"Chemicals, heavy metals, parasites, fungi, viruses and bacteria can cause food borne illness."
bacteria, viruses, fungi and parasites
They both destroy the cells that they attack.
bacteria, viruses, fungi and parasites
Immunity
Because viruses can not reproduce or produce protein without a host cell