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The Latest Breaking News from West Nile

New York City West Nile Cases Reach 30, Already Topping 2025, as Many Americans Miss Repellent Basics

NYC has logged 30 West Nile cases in 2026, topping all of 2025, as a national survey finds many adults don't know how to use bug spray correctly.

Medical Daily

Glenn County Confirms Second West Nile Death as All 10 State-Reported California Fatalities Sit in Central Valley Counties

Glenn County confirmed a second West Nile death as California reports 147 cases and 10 deaths. Who faces the highest risk during peak season?

Medical Daily

Seven in Ten Reported West Nile Cases This Year Are Neuroinvasive Even as National Totals Trail 2025

CDC data show 363 of 504 West Nile cases in 2026 are neuroinvasive, even as totals run below 2025. What older adults should do now.

Medical Daily

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As Europe warms, Italy sees West Nile virus spread farther and longer

Italian health authorities see evidence that rising temperatures and longer warm seasons are helping mosquitoes spread West Nile virus across a wider area, during more months of the year

The Independent UK

Maryland Adds Unscheduled Evening Mosquito Spraying in Bowie and Temple Hills as Late-Season Disease Concerns Continue

Maryland added unscheduled evening mosquito spraying in Bowie and Temple Hills. What residents should know about exemptions and West Nile warning signs.

Medical Daily

West Nile Cases Total 504 Across 41 States While Few Adults Know How to Choose or Apply Repellent

CDC logged 504 West Nile cases across 41 states as of Sept. 8. A new survey shows most adults do not know how to choose or apply insect repellent.

Medical Daily

US scientists turn to chickens to sound the alarm as West Nile cases rise

Chickens – which can test positive for viruses but cannot spread them – an ideal early warning system for mosquito-borne disease

The Guardian - US

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California West Nile Deaths Reach Six as Weekly Cases Jump by Twenty Two and Five Counties Report Firsts

California has confirmed six West Nile deaths and 86 human cases across 21 counties, with 22 new infections logged in a single week.

Medical Daily

Nebraska Records Its First West Nile Death of the Season as State Mosquito Activity Turns Very High

Lancaster County reported Nebraska's first West Nile death of the season, an adult in their 60s, with seven local cases and four hospitalizations.

Medical Daily

Yonkers Case Becomes Westchester's First Human West Nile Infection of the Season With Exposure Site Still Unconfirmed

Westchester County confirmed its first human West Nile case of the season in a Yonkers resident. Officials are still tracing where the exposure occurred.

Medical Daily

Westchester Confirms Its First West Nile Case of the Year in Yonkers as Metro Detections Climb

A Yonkers resident is Westchester County's first human West Nile case this year. Officials are still tracing where the exposure happened.

Medical Daily

A Standard West Nile Blood Test Can Come Back Negative in Patients Taking Common Infusion Drugs

CDC guidance warns that antibody testing can miss arboviral infection in patients on B-cell drugs, as West Nile season enters its peak weeks.

Medical Daily

One Positive Mosquito Trap Has Arlington Spraying Two Nights as North Texas Enters Peak West Nile Season

Arlington sprayed for West Nile over two September nights after one trap tested positive. Here is what triggers spraying and what residents should do.

Medical Daily

West Nile virus hits Seville: 89-year-old man dies, second death this season

The patient had been in Hospital Virgen del Rocío since Monday with meningoencephalitis caused by West Nile virus, which has already led to 54 cases in Andalusia this season.

Euronews

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Medical Daily

Suffolk County Confirms Its First West Nile Case in a Brookhaven Resident Who Was Never Hospitalized

Suffolk County confirmed its first West Nile case in a Brookhaven resident over 50. Symptoms began in late July and did not require a hospital stay.

The Independent UK

West Nile virus deaths are climbing as US enters peak season for deadly mosquito-borne infections

Most people infected with West Nile virus are asymptomatic but roughly one in five experience develop flu-like symptoms or worse

Medical Daily

New York City Reports Its First West Nile Case as Infected Mosquito Pools Nearly Double from Last Summer

NYC confirmed its first human West Nile case of the year as positive mosquito pools nearly doubled. Who faces the highest risk, and what should they do?

Medical Daily

Idaho Confirms Its First West Nile Meningitis Case of the Season in a Canyon County Resident Over 65

Idaho confirmed its first West Nile virus meningitis case of the year in a Canyon County resident. Here are the neurological warning signs.

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Medical Daily

Two Cases Were Enough for South Carolina to Declare a West Nile Outbreak While Arizona Reports 73 This Year

South Carolina declared a West Nile virus outbreak in its Pee Dee region after two cases were reported, as national totals for the year reached 181.

Medical Daily

West Nile Cases Climb to 143 Nationally as CDC Data Show the Season Entering Its Peak Weeks

CDC surveillance reports 143 West Nile cases nationally through Aug. 4, up from 113 a week earlier, as peak transmission weeks begin.

The Independent UK

Where have all the mosquitoes gone? Parts of the US are seeing a huge drop — and that has experts worried

Mosquito levels are down 50 percent across some western and Midwest states - but the West Nile virus caseload has hit a 22-year high

Medical Daily

North Dakota Confirms First Human West Nile Case as Five Counties Report Positive Mosquitoes

A Cass County resident was hospitalized with West Nile virus, North Dakota's first human case of 2026, with positive mosquitoes in five counties.

Medical Daily

CDC Reports West Nile Caused Most U.S. Arboviral Disease in 2024 as Powassan Reached a Record High

A CDC surveillance report counted 1,955 arboviral cases in 2024. West Nile dominated, and tick-borne Powassan hit a record 60 cases.

Medical Daily

California Reports Its First West Nile Death of 2026 in Kings County as Statewide Surveillance Numbers Climb

Kings County confirmed California's first West Nile death of 2026. Statewide mosquito surveillance shows why human case counts understate the spread.

Medical Daily

Maryland Confirms Its First West Nile Case of 2026 but Will Not Say Which County the Patient Lives In

Maryland confirmed its first 2026 West Nile case in the Capital Region but withheld the county. Here is the local mosquito data that is public.

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