According to the Greek National Public Health Organization (EODY), Greece has recorded 157 locally acquired cases of West Nile virus infection since the start of the current season, with 47 new cases added during the week leading up to Wednesday, August 19. The surge in mosquito-borne infections across Athens and surrounding regions has also pushed the total death toll to 13, prompting health authorities to urge travelers and residents to take preventative measures.
West Nile Virus Cases Surge Across Athens and Attica
The capital region of Attica, which includes Athens and its surrounding areas, serves as the primary epicenter for the current wave, according to EODY data. New infections have recently emerged in specific Athenian municipalities including Dionysos, Kallithea, and Petroupoli, alongside regional areas such as Alexandria in Imathia. Out of the 157 total domestic cases logged by August 19, a total of 116 patients suffered central nervous system complications such as encephalitis, meningitis, or acute limb paralysis. An additional 41 individuals experienced milder symptoms or infections without central nervous system involvement. EODY also tracks one separate case involving a patient with a complicated travel history whose exact infection location remains undetermined, keeping that individual excluded from the domestic tally.
Rising Mortality Rate Among Older Adults
The virus has caused 13 deaths in Greece this season, with four fatalities occurring during the single week leading to August 19. According to EODY records, every patient who died was over the age of 65 and suffered central nervous system complications. The median age among the deceased stands at 82 years, with the youngest victim at 66 and the oldest at 91. The acceleration of the outbreak is visible in week-over-week comparisons provided by health officials. On August 5, the agency reported 65 domestic cases and six deaths. By August 12, those figures climbed to 110 cases and nine deaths, before jumping to 157 cases and 13 deaths by August 19.
Transmission, Symptoms, and Broader European Spread
West Nile virus transmits to humans primarily through the bite of an infected mosquito, with birds serving as the natural reservoir, as stated by EODY. Approximately four out of five infected individuals display no symptoms at all, while others develop fever, headaches, muscle aches, or fatigue. Only a small fraction of cases progress to severe neuroinvasive diseases like meningitis or encephalitis, carrying the highest risk for older adults and individuals with chronic health conditions. Beyond Greece, the European Centre for Disease Prevention and Control (ECDC) reported that 59 areas across seven European countries had identified local infections by August 5, with Italy recording the highest overall count alongside cases in Spain, North Macedonia, Romania, France, and Germany.
Pro Tip for Travelers: Health authorities stress that the rising case numbers are not cause for panic, but travelers should not underestimate mosquitoes. Protect yourself by using insect repellents, wearing clothing that covers the skin during evening and nighttime hours, and utilizing window screens.
Frequently Asked Questions
How does West Nile virus spread to humans?
The virus spreads primarily through the bite of an infected mosquito that has previously fed on an infected bird, according to EODY.
What are the most common symptoms?
Most infected individuals show no symptoms. Those who do fall ill may experience fever, headaches, muscle aches, or fatigue, though severe cases can involve meningitis or encephalitis.
Who is most at risk of severe illness?
Older adults and individuals with certain chronic health conditions face the highest risk of developing severe neuroinvasive disease, according to public health data.
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