No; viruses are sub-Cellular 'virons', while parasites are frequently multi-cellular organisms.
Viruses
Parasites can carry and transmit viruses, but they do not "cause" them.
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.
No; leeches aren't vectors of dog true parasites but they can still infect them with other microorganisms like viruses.
Microflora like bacteria, as well as parasites, viruses, and other microscopic creepy-crawlies.
bacteria, viruses, fungi and parasites
Because viruses can not reproduce or produce protein without a host cell
They both destroy the cells that they attack.
Immunity
no. . . Because parasites and viruses can only grow on living matters... There may be saprophytes and bacteria growing in your food. . . Even parasites and viruses can be there but can not grow. .
No, viruses do not produce their own food. They are obligate intracellular parasites that rely on host cells to replicate and generate new virus particles. Viruses lack the machinery necessary for carrying out metabolic processes like producing food.
Viruses differ from bacteria, fungi, and parasites in that they cannot reproduce independently; they require a host cell to replicate. While bacteria and fungi can divide and reproduce on their own through processes like binary fission or budding, viruses hijack the host's cellular machinery to produce new viral particles. Additionally, parasites are typically multicellular organisms that can reproduce sexually or asexually within or outside a host, whereas viruses are acellular and rely entirely on their host's biological processes for replication.