Bacteria are often wrongly blamed for infections caused by viruses, which leads to antibiotics being prescribed for treating viral infections. In fact, antibiotics will not work against viruses because they target only bacteria, and bacteria are very different from viruses.
Viruses are the particles that infect organisms such as humans, animals, insects and even bacteria! Viruses are roughly composed of a genome that is encased in a rigid shell. It is the shell surface that recognizes its prey and allows infection to occur. This infection is needed for the virus to multiply.
Bacteria, in contrast, are tiny unicellular organisms that can develop and multiply independently, without infecting host prey. Bacteria are also a lot bigger than most viruses and since they have their own metabolism, their growth can be prevented at many levels with the use of antibiotics. Since viruses are unable to multiply unless they are inside a host, antibiotics will have no effect on the virus itself or on virus multiplication.
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