Final answer:
Cellulitis is the disease among the options given that is not caused by a virus; it is a bacterial infection. Viral infections listed include West Nile encephalitis, Ebola, HIV/AIDS, and the common cold. These can range from acute to chronic ailments, whereas bacterial infections like Cellulitis require antibiotics.
Step-by-step explanation:
Among the diseases listed, Cellulitis is not caused by a virus. West Nile encephalitis, Ebola, HIV/AIDS, and the common cold are all viral diseases, whereas Cellulitis is a bacterial infection of the skin and tissues beneath the skin. Other viral diseases mentioned include Middle East respiratory syndrome, German measles, severe acute respiratory syndrome, and infectious diseases like rabies and polio which require the introduction of foreign nucleic acid to the body to cause infection.
Major viral diseases such as HIV/AIDS involve a long-term, chronic infection, and viruses like the common cold result in acute infections. Treatments for these diseases can range from antiviral drugs to supportive therapies, depending on the disease's severity and available medical interventions. However, Cellulitis typically requires antibiotic treatment, as it is bacterial, not viral, in nature.