Alerts in Greece

West Nile Virus - Greece

A total of 162 domestic cases of West Nile virus infection, which is transmitted by mosquitoes, have been recorded in Greece since the beginning of the year 2023. During the same period, 22 deaths of patients who developed meningitis or encephalitis due to the infection were also recorded. All patients who died were over 63 years of age. The actual number of cases is likely higher, as for every case with central nervous system symptoms there are approximately 140 cases with mild or no symptoms. Fever, headache, nausea or rash may occur in 20% of cases, but only 1% of patients develop severe disease affecting the brain.