Let's define a couple of terms:
• Bacteria are defined as ,prokaryotes,. They are simple-celled organisms, consisting of only genetic material, a cell wall or a cell membrane, ribosomes, cytosol, and cilia or flagella.
,
• Viruses are considered ,nonliving,. They are inactive and inject their viral genome into a host cell. Viruses are one of the smallest things on this planet. Viruses need a host cell in order to infect and replicate.
Taking this information into context, we can answer the question:
It is easier to treat a bacterial infection because they are separate organisms from the host organism. It is easier to target something bigger and more definitive and won't harm the host itself all too much.
Compared to a viral infection, it is extremely difficult to treat since any treatment would have to target the host organism's cell, as viruses inject their viral genome and take over the host cell and force it to assemble more viruses and release them. This is why we create vaccines, to prevent viral infections.