Question

viruses are different from all other categories of microbes explain this

Answer 1

The biggest difference between viruses and bacteria is that viruses must have a living host - like a plant or animal-to multiply,

Answer 2

viruses are non-living outside a host body but become living organisms when they enter a host body. So they are on the borderline between living and non living, whereas other microbes are living. Also, they have no defined structure.