The techniques of molecular biology and genetic engineering have made possible the development
of antiviral drugs effective against a variety of viral infections. Viruses, like bacterial
infective agents, act as antigens in the body and elicit formation of antibodies in an infected
individual. Indeed, vaccines against viral diseases such as smallpox were developed before the
causative agents were known. Some viruses stimulate cellular production of a protein, called
interferon, that inhibits viral growth within the infected cell.
Antibiotics are not effective as an antiviral agent and may actually encourage viral potency.
(see antibiotic abuse)
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