Fever is basically an indication that the immune system of human body is fighting foreign antigens. And viral fever is a condition where immune system fights back the entry of viruses in to the body.

There are several number of viral infections that may affect human beings. Children and elderly with weak immunity are prone to viral fevers where body temperature varies from 99 degrees to 103-degree Fahrenheit, depending on the type of virus.

The general sign and symptoms may include, shivering, chills, dehydration, headache, sweating, loss of appetite, weakness and lethargy, pain in muscles, sore throat, tonsils, chest congestion, skin rash, nausea, vomiting and runny nose.

Viral infections are contagious and can widespread through cough and sneeze and when get inhaled in the form of tiny droplets cause infection.

Infections can also spread by touching the person suffering from a viral fever, eating or drinking contaminated foods, bites from insects can also cause infections. 

Eating and drinking from contaminated places can cause viral infections, besides insect bites.

Treatment:

Common treatment methods include medications such as acetaminophen or ibuprofen for controlling fever. Doctors recommend proper rest, drinking more fluids to keep the body hydrated, and taking antiviral medicines like Tamiflu, tepid sponging to normalize body temperature.