Common causes of fever in a returning traveller from the tropics

• Malaria
• Dengue Fever
• Meningitis
• Typhoid
• HIV
• Viral hepatitis
• Influenza
• Dysenteric and non-dysenteric gastroenteritis

Incubation Periods of Common Infections

• <1 week: Meningococcus, Diphtheria, Influenza, Scarlet Fever
• 1-2 weeks: Malaria, Dengue Fever, Typhoid, Measles.
• 2-3 weeks: Mumps, Rubella, Chickenpox
• >3 weeks: Infectious mononucleosis, CMV, Viral Hepatitis, HIV