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The Latest Breaking News from West Nile Virus

A deadly brain-swelling illness spread by mosquitoes is on the rise in the US

Mosquitoes typically like wet and warmer weather. But scientists say drought is actually fueling the rise of West Nile virus

The Independent UK

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 virus surge in Greece with Attica at the epicentre

Greek authorities are concerned over the West Nile virus surge in the country, with 45 new locally transmitted infections reported last week.

Euronews

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US mosquito numbers have crashed during a historic drought, but scientists say fewer mosquitoes can still mean a higher risk of West Nile virus

Mosquitoes have all but vanished from parts of the United States this summer, and residents in states like Minnesota say they cannot remember a season this quiet. A historic drought sweeping through the West and Midwest has cut mosquito populations by as much as 50 to 70 per cent in…

The Times of India

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

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

West Nile virus spreads in Europe? Greece reports surge, Italy leads infections, first case in Germany

Greece and Italy are reporting the highest West Nile virus activity in Europe this season.

Euronews

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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

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

Medical Daily

Three Central Valley Counties Confirm Their First West Nile Cases as Mosquito Samples Test Positive Statewide

Fresno, Kings and Tulare counties confirmed their first 2026 West Nile cases as California logged 670 positive mosquito samples.

Medical Daily

Fresno County Found Its First West Nile Case of 2026 in a Blood Bank, Not a Clinic

Fresno County's first 2026 West Nile case was found through blood donor screening, not a clinic visit. What that reveals about hidden transmission.

Medical Daily

New Mexico Confirms First Two West Nile Cases of 2026 in Bernalillo and Otero Counties

New Mexico confirms its first two West Nile cases of 2026. A Bernalillo County woman is hospitalized. Peak season runs August through September.

Medical Daily

How to avoid West Nile virus as cases start to rise in Europe

Cover up, use insect repellent and clear stagnant water around your home, WHO Europe advises, as West Nile virus cases climb in parts of southern Europe.

Euronews

West Nile Virus Deaths Rise in Arizona as 2026 Season Tracks at 5 Times the Historical Baseline

The 2026 West Nile virus season has recorded four deaths in Arizona and 48 national cases by late June, nearly five times the historical average. Peak season is still ahead.

Medical Daily

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Euronews

West Nile virus: 21 cases in Greece as it spreads across Europe

Italy, Spain, Romania and North Macedonia also reported locally acquired cases of West Nile virus infection.

Medical Daily

Phoenix Leads the Nation in West Nile Virus Deaths as 2026 Season Becomes Worst in Over Two Decades

Maricopa County reports 29 West Nile cases and 4 deaths — the worst early-season start in over 20 years. CDC confirms 48 cases in 23 states. What Phoenix residents need to know now.

Medical Daily

West Nile Season Opens at a 22-Year High with 38 of 48 Cases Already Involving Brain Disease

CDC confirms 48 West Nile cases by June 30, 2026 — 38 involving brain disease. The earliest severe start in 22 years, with peak season still ahead. What to know now.

Medical Daily

Wisconsin Reports Its First West Nile Virus Activity as 23 States Enter a Record Early Season

Wisconsin confirmed its first West Nile detections July 14 as 23 states report the worst early-season activity since 2004. Here's who is most at risk.

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Medical Daily

West Nile Virus Is Entering Peak Transmission Season, and 2026 Is Already the Worst in Over 20 Years

West Nile virus 2026 enters peak August-September window. CDC confirmed 48 cases by June 30, nearly 5x the historical average. Maricopa County: 29 cases, 5 deaths. No vaccine exists.

Medical Daily

CDC Says West Nile Virus Is Off to Its Earliest Start Since 2004 as Peak Season Approaches

CDC confirms 48 West Nile cases by June 30, 2026 — nearly 5x the historical average. Maricopa County leads with 29 cases and 5 deaths. Peak season is still ahead.

Medical Daily

West Nile Virus Season Hits a 22-Year High as CDC Urges Mosquito Precautions in 23 States

West Nile virus hits 22-year early-season high with 48 cases in 23 states as of June 30. CDC urges DEET use and mosquito control now.

Medical Daily

West Nile Virus Detected in Nashville Mosquitoes for the First Time in 2026

Nashville Metro Public Health confirmed the first West Nile virus detection of 2026 in North Nashville on July 1. Here's the official guidance and what Davidson County residents should do.

Medical Daily

Four People Are Dead from West Nile Virus in Maricopa County: Here Is What Phoenix Residents Need to Do Tonight

4 people dead, 29 cases confirmed in Maricopa County — the worst early West Nile start in 20+ years. Phoenix residents should apply DEET repellent before tonight's outdoor events.

The Independent UK

West Nile cases hit highest total in decades as experts warn about mosquitos spreading the virus across the US

The US has seen the highest number of cases by this point in the year since 2004

Medical Daily

CDC Issues Fourth of July Warning as West Nile Virus Spreads to 23 States

CDC confirms 48 West Nile cases across 23 states — the worst early start in 20+ years. Here's what families need to know before July 4 celebrations.

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