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Phlebovirus infection in Greece: a case report
A Papa1, Ch Kesisidou2, A Kontana1
1Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, , Greece.
Background:
Sandfly-transmitted phleboviruses cause to humans an asymptomatic or mild infection to severe meningitis or encephalitis. Phleovirus infections are common in the Mediterranean countries during the summertime when sandflies are active. It is estimated that several cases remain undiagnosed.
Description Of Case:
In July 2013, a 45-year-old Greek male, was admitted to the General Hospital of Florina in northwestern Greece with two-day history of fever, myalgia, arthralgia, mild headache, and hemorrhagic exanthema. A serum sample obtained from the patient on the 6(th) day of illness was tested negative for West Nile virus infection. Instead, high titers of IgM and IgG antibodies against Toscana virus (TOSV) were detected, with low titers against sandfly fever Naples virus and no reactivity against sandfly fever Sicilian and Cyprus viruses, suggesting that the causative agent was TOSV or other phlebovirus with antigenic similarity to TOSV.
Conclusion:
Phleboviruses have to be included in the differential diagnosis of acute summer febrile cases, accompanied or not by neurological symptoms. Effort has to be paid to test clinical samples during the first days of the disease when the virus is detectable by molecular or isolation methods, in order to elucidate the complex epidemiology of phleboviruses in the Mediterranean area. Hippokratia 2015; 19 (2):189-191.
Insights
Toscana virus (TOSV) caused a severe febrile illness in a Greek man. Early diagnosis of phleboviruses is crucial for understanding their Mediterranean epidemiology.
Area of Science:
- Arbovirology
- Infectious Diseases
- Neurovirology
Background:
- Sandfly-transmitted phleboviruses cause a spectrum of human illnesses, from mild febrile conditions to severe neurological diseases like meningitis and encephalitis.
- Phleovirus infections are endemic in Mediterranean regions, particularly during summer months when sandfly vectors are active.
- A significant number of phlebovirus infections may go undiagnosed, complicating epidemiological assessments.
Observation:
- A 45-year-old Greek male presented with acute febrile illness, myalgia, arthralgia, headache, and hemorrhagic rash.
- Initial testing ruled out West Nile virus infection.
- Serological analysis revealed high IgM and IgG antibody titers against Toscana virus (TOSV), with lower titers against sandfly fever Naples virus and no reactivity to other tested phleboviruses.
Findings:
- The patient's clinical presentation and serological profile strongly indicated Toscana virus (TOSV) as the causative agent.
- The findings suggest TOSV or antigenically similar phleboviruses are responsible for acute summer febrile illnesses in the region.
- The diagnostic window for viral detection, particularly via molecular or isolation methods, appears to be early in the disease course.
Implications:
- Phleboviruses, including TOSV, should be considered in the differential diagnosis of acute summer febrile illnesses, especially those with neurological manifestations.
- Timely diagnosis through early sample testing is essential for accurate etiological determination and understanding phlebovirus epidemiology in the Mediterranean.
- Enhanced surveillance and diagnostic capabilities are needed to effectively manage and study phlebovirus infections.
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