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EXPLAINED: West nile loc | Rare Historical Photos

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

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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.

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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.

Medical Daily

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

The Independent UK

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.

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.

Medical Daily

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

The Independent UK

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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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Medical Daily

Utah Mosquito Samples Testing Positive for West Nile Have Jumped From 39 to 296 in a Single Season

Utah has 296 West Nile-positive mosquito samples this season, up from 39 at the same point last year. What that number measures.

Medical Daily

West Nile Virus Turns Up in Stratford Mosquitoes as Connecticut Enters Peak Human Case Months

West Nile virus was found in Stratford mosquitoes as Connecticut enters peak months for human cases. Here is what residents should do now.

Medical Daily

Santa Clara County Reports Its First Two West Nile Cases of 2026, but Officials Cannot Say Where the Patients Were Infected

Santa Clara County confirmed two West Nile cases, but both patients traveled during the incubation period, so local transmission is unconfirmed.

Medical Daily

West Nile Virus Turns Up in Bay Township Mosquitoes as Ohio Logs 62 Positive Samples

Ottawa County, Ohio, detected West Nile virus in mosquitoes in Bay Township. What a positive mosquito pool means and the prevention step people skip.

Medical Daily

Some Counties Cannot Afford to Track Mosquitoes, and the CDC Says Its Own Counts Are Incomplete

The CDC says West Nile underreporting is inherent, and Washington monitors mosquitoes in only a few counties due to a lack of resources.

Medical Daily

Tulare County Warns of Two Mosquito Viruses at Once After Confirming Its First West Nile Case

Medical Daily

California West Nile Cases Are Running at Double Last Year's Pace as Three Valley Counties Report First Infections

California has six confirmed West Nile cases, double last year's pace. Tulare, Kings and Fresno counties report their first human infections of 2026.

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