<Li> varicella - zoster immunoglobulin </Li> <P> In 2010 it was reported that the presence of a tobamovirus (Pepper mild mottle virus) in the stool was associated with clinical disease and a specific immune response . If this association can be confirmed it is the first known case of disease caused by a virus previously considered pathogenic only to plants . </P> <P> Viral disease is usually detected by clinical presentation, for instance severe muscle and joint pains preceding fever, or skin rash and swollen lymph glands . Laboratory investigation is not directly effective in detecting viral infections, because they do not themselves increase the white blood cell count . Laboratory investigation may be useful in diagnosing associated bacterial infections, however . Viral infections are commonly of limited duration, so treatment usually consists in reducing the symptoms; antipyretic and analgesic drugs are commonly prescribed . </P>

The most common treatment for systemic viral diseases is
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