Smallpox Symptoms, Sings and Causes

Symptoms and signs of the smallpox are also obvious. Not only visual symptoms appear. At the early stage, an immediate signs that also can be associated with the cold, fever, or flu show up. The person starts feeling general discomfort. He or she complains of heavy head, exhaustion, back ache, nausea. People infected with this virus may often demonstrate a desire to vomit.