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About vector-borne diseases

Vectors are organisms that transmit pathogens and parasites from one infected person (or animal) to another, causing serious diseases in human populations.

These diseases are commonly found in tropical and sub-tropical regions and places where access to safe drinking-water and sanitation systems is problematic.

Vector-borne diseases account for 17% of the estimated global burden of all infectious diseases. The most deadly vector-borne disease, malaria, caused an estimated 627 000 deaths in 2012.

However, the world's fastest growing vector-borne disease is dengue, with a 30-fold increase in disease incidence over the last 50 years.

More information about vector-borne diseases

  • Chagas disease
    Life-threatening condition transmitted through triatomine bugs, contaminated food, infected blood transfusion
  • Chikungunya
    Viral disease transmitted to humans by infected mosquitoes
  • Congo-Crimean haemorrhagic fever
    Severe illness caused by a number of viruses
  • Dengue
    Mosquito-borne infection that may cause lethal complications
  • Dracunculiasis
    Infection caused by drinking-water containing water fleas that have ingested Dracunculus larvae
  • Human African trypanosomiasis
    Glossina-borne parasitic infection, fatal without prompt diagnosis and treatment
  • Leishmaniasis
    Infection is caused if bitten by female sandflies
  • Lymphatic filariasis
    Infection occurs when filarial parasites are transmitted to humans through mosquitoes
  • Lyme disease
    Disease caused by infected ticks
  • Malaria
    Disease caused by a parasite plasmodium, transmitted via infected mosquitoes
  • Onchocerciasis
    Parasitic disease caused by the filarial worm onchocerca volvulus
  • Schistosomiasis
    Parasitic disease caused by trematode flatworms of the genus
  • Yellow fever
    Viral disease transmitted via aedes mosquitoes

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