#Italy, Seasonal #Human Cases #WNV & #Usutu Virus #Surveillance - Weekly Report No. 9 (ISS, Sept. 24 '26): 700 cases with 54 deaths so far

 

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Summary

    ° Since the beginning of arboviral infection season and as of Sept. 23 '26, 700 confirmed human cases of WNV have been recorded (they were 657 in last week update). 

    ° Of these: 

        § 368 were West Nile Neuroinvasive Disease, of which 5 imported: 1  from Maldives, 1 France, 1 Belgium, 1 Greece and 1 the Netherlands, 

        § 88 were asymptomatic cases among blood donors, 

        § 239 were West Nile Fever cases, 

        § 4 were unspecified cases, 

        § 1 was an asymptomatic case (Table 1).

    ° The number of affected Provinces has risen to 83 in 19 Regions.

    ° Among confirmed cases, 54 deaths have been reported. The Case-Fatality Rate in WNND cases is now 14.6% (in 2025 it was 14.9%).

    ° So far this season, 15 human cases of Usutu virus have been reported (8 in Lombardy, 1 Emilia-Romagna, 1 Marche, 2 Latium, 1 Piedmont, 2 Veneto).

Figure 1. Weekly Confirmed Human Cases of WNV, Italy: 2025 & 2026 Seasons

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Source: 

Link: https://www.epicentro.iss.it/westnile/bollettino/Bollettino_WND_2026_9.pdf

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