Rash of Crimean-Congo hemorrhagic fever showing petechiae, purpura, and ecchymoses.
Viral hemorrhagic fevers are caused by a diverse group of viruses. Illness generally begins with flu-like symptoms such as fever, fatigue, dizziness, headache, and muscle aches. After 5 days a rash often develops, which is most prominent on the trunk of the body. Severe infection may lead to death due to complications from massive bleeding and shock due widespread damage to blood vessels. These viruses can be spread from person to person through contact with body fluids (e.g., blood). A vaccine is available for prevention of Yellow Fever. Other vaccines are under investigation. No antibiotic is effective against these or any viral diseases.