Bacteria are unicellular microorganisms with a primitive structure that absorb nutrients and release metabolic substances from and into the environment, and multiply by binary fission, which is a method of asexual reproduction that involves the splitting of a parent cell into two approximately equal parts. The body of a bacteria is protected on the outside by a relatively solid cellular membrane.
Viruses are small infectious agents that replicate only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea. Unlike bacteria, viral populations do not grow through cell division, because they are acellular. Instead, they use the machinery and metabolism of a host cell to produce multiple copies of themselves, and then assemble in said cell.
When ozone comes in contact with a bacteria, it interferes with the metabolism of bacterium-cells, most likely through inhibiting and blocking the operation of the enzymatic control system. A sufficient amount of ozone breaks through the cell membrane, and this leads to the destruction of the bacteria.
When ozone comes in contact with a virus, it destroys them by diffusing through the protein coat into the nucleic acid core, resulting in damage of the viral RNA. At higher concentrations, ozone destroys the capsid or exterior protein shell by oxidation, so DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) structures of the microorganism are affected and the virus is destroyed.