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Infections of the central nervous system of suspected viral origin: A collaborative study from Finland

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Abstract

We studied 3231 patients with acute central nervous system (CNS) symptoms of suspected viral origin to elucidate the current etiologic spectrum. In 46% of the cases, a viral finding was observed. Varicella-zoster virus (VZV) was the main agent associated with encephalitis, as well as meningitis and myelitis. VZV comprised 29% of all confirmed or probable etiologic agents. Herpes simplex virus (HSV) and enteroviruses accounted 11% each, and influenza A virus 7%. VZV seems to have achieved a major role in viral infections of CNS. In encephalitis in our population, VZV is clearly more commonly associated with these neurological diseases than HSV. The increase in VZV findings may in part be a pseudophenomenon due to improved diagnostic methods, however, a true increase may have occurred and the pathogenetic mechanisms behind this should be elucidated.

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Correspondence to Marjaleena Koskiniemi.

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Study Group: Marjo-Riitta Aine, Matti Junes, Central Hospital of Lapland, Rovaniemi; Vilho Myllylä, Heikki Rantala, Anne Saari, Oulu University Hospital, Oulu; Roger Byring Lauri Hakamies, Harri Kivelä, Bjarne Udd, Vaasa Central Hospital, Vaasa; Merja Kaislakoski, Kirsi Mustonen, Annamari Juntunen, Central Hospital of North Karelia, Joensuu; Heidi Fagerström, Dag Nyman, Åland Central Hospital, Mariehamn; Niilo-Pekka Huttunen, Taneli Sarasoja, Central Hospital of Central Finland, Jyväskylä; Eila Herrgård, Matti Korppi, Juho Nuutinen, Kuopio University Hospital, Kuopio; Juhani Grönlund, Ulla Kaski, Ritva Norja, Central Hospital of South Pohjanmaa, Seinäjoki; Christine Hedman, Ulla-Maija Ritanen-Mohammed, Central Hospital of Päijät-Häme, Lahti; Helena Pesonen, Ari Saarinen, Kajaani Central Hospital, Kajaani; Ilkka Pieninkeroinen, Tiina Wallden, Central Hospital of Kymenlaakso, Kotka; Pentti Lautala, Raili Saari, Jussi Valpas, Central Hospital of South Karelia, Lappeenranta; Juhani Sankala, Hannu Kilpeläinen, Savonlinna Central Hospital, Savonlinna; Pirkko Karttunen, Matti Pere, Anja Selonen, Jaakko Taalas, Mikkeli Central Hospital, Mikkeli; Seppo Mannila, Kari Uotila, Central Hospital of Kanta-Häme, Hämeenlinna; Seppo Tuisku, Markus Väre, Central Hospital of Central Pohjanmaa, Kokkola, Finland.

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Koskiniemi, M., Rantalaiho, T., Piiparinen, H. et al. Infections of the central nervous system of suspected viral origin: A collaborative study from Finland. Journal of NeuroVirology 7, 400–408 (2001). https://doi.org/10.1080/135502801753170255

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  • DOI: https://doi.org/10.1080/135502801753170255

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