#Italy, #WNV & #Usutu Virus #Surveillance, Weekly #Report (September 17 '26): 657 Confirmed Human Cases so far, with 51 deaths

 

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    ° Since the beginning of 2026 epidemic season in Italy, 657 confirmed human cases of infection with West Nile Virus (WNV) have been confirmed (they were 594 last week).

    ° Of these: 

        § 345 were West Nile Neuroinvasive Disease (WNND), of which five imported (1 from Maldives, 1 France, 1 Belgium, 1 Greece and 1 the Netherlands), 

        § 80 were asymptomatic cases among blood donors, 

        § 224 were West Nile Fever cases 

        § 4 were unspecified cases, 

        § 4 were asymptomatic cases.

    ° The number of affected provinces rose to 82 in 19 Regions.

    ° Among confirmed cases, there have been 51 deaths (di cui uno in un caso importato). The Case-Fatality Rate among WNND cases is now at 14.7% (it was 15.8% in 2025).

    ° So far this season, 14 confirmed human cases of infection with Usutu virus have been reported (8 in Lombardy, 1 Emilia-Romagna, 1 Marche, 2 Latium, 1 Piedmont, 1 Veneto).

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Human Cases of Confirmed WNV per Week - 2026

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Source: 

Link: https://www.epicentro.iss.it/westnile/bollettino/Bollettino_WND_2026_8.pdf

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