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Surge in West Nile and Dengue cases in Italy

Updated 7 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-25 11:14 UTC → 2026-08-26 10:57 UTC · added removed

Dengue, Chikungunya, and Surge in West Nile reports and Dengue cases in Italy

Health authorities in Italy continue are responding to implement mosquito control measures following a surge in mosquito-borne illnesses, specifically West Nile and Dengue viruses. Recent reports of various viral infections. In addition indicate fatalities linked to previously confirmed cases West Nile, including an 85-year-old in Tuscany Pavia and Ferrara, a resident of Castellarano, Reggio Emilia, has been confirmed to 72-year-old in Qualiano. In the Lodi province, seven West Nile cases have Dengue fever after returning from an endemic area. The patient is hospitalized, and authorities been confirmed, with five identified as severe neuro-invasive forms. Local governments have activated an extraordinary intensified emergency disinfection protocol involving dawn adulticide treatments and door-to-door larvicidal treatments. While no health alarm has been issued, an urgent ordinance has targeted a 200-meter radius around via Pietro Micca for these measures. New precautionary actions have emerged in other regions. In Carisolo, insecticide treatments are scheduled for public and private areas Monza, extraordinary disinfection is underway following a resident reporting suspected Dengue symptoms after traveling abroad. case. In Berra, an extraordinary disinfection protocol—including adulticide and larvicide treatments within a 100-meter radius—was activated due to Guidonia Montecelio, new West Nile infections have triggered a suspected case second cycle of Dengue, Chikungunya, or Zika, pending laboratory confirmation. Additionally, Albano Laziale has scheduled nocturnal adulticide treatments in public green spaces, such as parks and playgrounds, to reduce mosquito populations. larvicide treatments. In the Lazio region, specifically within the province of Viterbo, West Nile virus continues to circulate. National data from the Istituto Superiore di Sanità indicates 226 confirmed human infections across Italy, with 35 Barletta-Andria-Trani, cases specifically reported in Lazio. Efforts to mitigate local transmission of Chikungunya and Dengue remain ongoing, particularly following confirmed cases Margherita di Savoia have prompted preventive disinfection in Pisa Trani and Florence, reinforcing the necessity of urgent disinfestation Trinitapoli. Regional impacts continue to reduce Aedes mosquito density. Recent developments show the spread of these viruses into the Umbria region. A resident of Pozzuolo Umbro expand. Oristano has tested positive for the reported 24 West Nile virus and is currently asymptomatic, cases, while a resident near Perugia Umbria has tested positive for recorded a West Nile case in Castiglione del Lago and an imported Dengue fever following travel abroad. Local health services case in these areas Perugia. In Pescara, authorities are deploying mosquito traps and conducting screenings implementing preventive measures during public events. To mitigate transmission risks, health officials are urging citizens to prevent local circulation. use repellents, install window screens, and eliminate standing water.

Versions

  1. 2026-08-26 10:57 UTC Surge in West Nile and Dengue cases in Italy
  2. 2026-08-25 11:14 UTC Dengue, Chikungunya, and West Nile reports in Italy
  3. 2026-08-25 04:17 UTC Dengue, Chikungunya, and West Nile reports in Italy
  4. 2026-08-20 15:30 UTC Dengue, Chikungunya, and West Nile reports in Italy
  5. 2026-08-17 17:13 UTC Dengue, Chikungunya, and West Nile reports in Italy
  6. 2026-08-16 10:12 UTC Dengue, Chikungunya, and West Nile reports in Italy
  7. 2026-08-15 05:51 UTC Dengue, Chikungunya, and West Nile reports in Italy
  8. 2026-08-14 13:31 UTC Dengue fever reports and mosquito control in Italy

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