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Mosquito-borne illnesses increasing in US. See map of affected states
Mosquito-borne illnesses are on the rise in the US, with West Nile virus cases reported across 41 states.
Mosquito-Borne Illnesses
9 independently detected trends connected to this subject, with the latest coverage first.
What Archynetys tracks about Mosquito-Borne Illnesses
This hub groups 9 separate news trends connected to Mosquito-Borne Illnesses, spanning August 2, 2026 through September 12, 2026. Each event page combines source coverage, attention velocity and a time-stamped explanation instead of treating every headline as a separate story.
The record below represents 102 article observations and 93 source signals, led by Health coverage. Use it to compare how individual events emerged, spread and changed over time.
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Massachusetts raises West Nile risk in nearly a dozen towns after 6th human case
5 news sources are covering this Health story right now — Archynetys is tracking how fast it spreads.
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West Nile Death In Chicago Is State’s First This Year, Officials Say
Chicago health officials report the state's first West Nile virus death of the year alongside newly confirmed human cases.
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City Will Spray Upper West Side With Pesticides in Effort to Combat West Nile Virus
New York City plans pesticide spraying on the Upper West Side following human West Nile virus cases across four boroughs.
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Pedestrian killed after being struck on ramp to I-275 in Clermont County
West Nile virus detections in Ohio mosquitoes spark public health alerts.
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Second human case of West Nile virus identified in Massachusetts
West Nile virus cases are rising in the US, with a second human case confirmed in Massachusetts
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Citrus County confirms first case of locally acquired Dengue fever
Dengue fever cases are rising in Florida, with multiple counties confirming local transmission for the first time in years.
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Brain-swelling disease carried by mosquitos is surging
West Nile virus cases are rising, with mosquito-borne illnesses on the increase
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West Nile hits 12 New Jersey counties, and officials warn mosquitoes are 'the deadliest animal'
West Nile virus has spread to 12 counties in New Jersey, prompting officials to warn of mosquito dangers.