1. Fever
One of the first signs of ARS can be a mild fever, up to about 102 degrees F. The fever, if it occurs at all, is often accompanied by other usually mild symptoms, such as fatigue, swollen lymph glands, and a sore throat. At this point the virus is moving into the blood stream and starting to replicate in large numbers. As that happens, there is an inflammatory reaction by the immune system.
