Japanese encephalitis virus is present in Asia and Oceania, from Japan to India, Pakistan and Australia. Outbreaks are erratic and spatially and temporally limited phenomena, occurring quite unpredictably. The virus is a leading cause of viral encephalitis in Asia, with 30 000 to 50 000 cases reported annually.
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.
Sindbis virus is widely and continuously found in insects (the main vectors are Culex and Culiseta mosquitoes) and vertebrates in Eurasia, Africa, and Oceania. ECDC factsheet for health professionals
Despite good access to effective antibiotics, Streptococcus pneumoniae (pneumococci) is still a major cause of disease and death in both developing and developed countries. Pneumococci are the main cause of bacterial respiratory tract infections, such as pneumonia, middle ear infection, and sinusitis, in all age groups.
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.
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.
This document assesses the risk related to dengue for EU/EEA citizens travelling to or residing in Réunion, and the risk related to having an outbreak of dengue in mainland EU/EEA following introduction of the virus from Réunion.
Spanish authorities have reported the likely sexual transmission of dengue between two men. One of the men travelled to Cuba and the Dominican Republic (both countries where dengue is endemic) and returned to Spain on 4 September 2019.
On 1 October 2019, a case of locally acquired Zika virus (ZIKV) disease in France (Hyères city, Var department) was laboratory confirmed. To date, and based on ECDC’s epidemiological assessment, the probability of ongoing vector-borne local transmission in Hyères (and surrounding areas) is considered very low because current evidence does not indicate the existence of a more extensive cluster of ZIKV cases.