Arbovirus

Background

• Infections spread by mosquitos, ticks, flies.
• Dengue fever is the most common causes of arboviral disease around the world.
• Increased incidence in warmer months.

Clinical Features

• Most commonly manifest as four syndromes (that may overlap:)
  • Fever and myalgia
  • Arthritis and rash
  • Encephalitis
  • Viral hemorrhagic fever
    • Headache common part of all syndromes

Differential Diagnosis

• Fever and rash
• Encephalitis
• Viral hemorrhagic fever

Diagnosis

• Detailed travel and exposure history
  • Local epidemiologic patterns helpful
• Specific serologic testing

Management

• Symptomatic management
• Exclude other causes if serious presentation
  • Consider empiric acyclovir and antibiotics until HSV and bacterial causes ruled out.