Facts about Japanese encephalitis
The Japanese encephalitis virus is present in Asia, from Japan to India and Pakistan, and outbreaks are erratic and spatially and temporally limited phenomena, occurring quite unpredictably, even if all conditions appear to be present in a definite place. It is a leading cause of viral encephalitis in Asia, with 30-50,000 cases reported annually.
Facts about Rift Valley fever
Rift Valley fever is an acute viral febrile haemorrhagic disease that affects primarily ruminants in Africa and in the Arabian Peninsula: cattle, buffalo, sheep, goats and camels. Humans may become infected by mosquito bites and through direct or indirect contact with the blood or organs of infected animals.
Facts about yellow fever
Yellow fever (YF) is a mosquito-borne infection, distributed in west, central and east Africa and in South America. The disease can cause a wide spectrum of symptoms, from mild to fatal. In severe cases there may be spontaneous haemorrhage. Mortality of these clinical cases can be as high as 80%, on a par with Ebola, Marburg and other haemorrhagic viral infections.
Factsheet about Zika virus disease
Most Zika virus infections are either asymptomatic or cause a mild illness with a transient maculopapular rash. However, there is scientific consensus that Zika virus is a cause of microcephaly, congenital nervous system malformations and Guillain-Barré syndrome.
Factsheet about dengue fever
Dengue is a mosquito-borne viral disease widely spread in tropical and subtropical regions. The disease is transmitted by Aedes mosquitoes.
Factsheet about malaria
Malaria is caused by Plasmodium parasites. Transmission requires an intermediate mosquito (anopheles) host, which is found worldwide. Malaria transmission occurs in large areas of Central and South America, Africa, Asia, Eastern Europe, and the South Pacific.
Factsheet about West Nile virus infection
West Nile virus is a mosquito-borne flavivirus that is maintained in an enzootic cycle between mosquitoes and birds. Humans and horses are incidental dead-end hosts.