A deadly brain-swelling illness spread by mosquitoes is on the rise in the US
18 news sources are covering this Health story right now — PULSE is tracking how fast it spreads.
🌍 Cross-language spread
PULSE detected this story across 2 language editions of the world's news.
Detected by matching proper nouns and figures that survive translation. Times reflect when each edition's coverage was first indexed.
Velocity
How fast coverage is spreading — measured hourly from article rate × source diversity. How this works →
The brief
"A deadly brain-swelling illness spread by mosquitoes is on the rise in the US" is generating significant coverage in the Health category, with 20 articles from 18 distinct sources tracked by PULSE so far.
Outlets currently covering the story include boisestatepublicradio.org, Patch, Yahoo News Canada and Yahoo Health. PULSE measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.
This brief was generated by PULSE's extractive engine from coverage metadata only. The latest headlines from every source are listed below; the velocity chart shows how the story is developing in real time.
Generated by PULSE's extractive engine from coverage metadata only — no AI-written claims. Updated 49d ago.
Quick answers
Why is "A deadly brain-swelling illness spread by mosquitoes is on the rise in the US" trending?
Because 18 independent news sources published 20 articles about it in a short window — a coverage burst PULSE classifies as a trend.
How does PULSE measure this trend?
PULSE scores velocity from the rate of new articles weighted by source diversity, snapshotted hourly. The full method is public on our methodology page.
Is this trend still active?
The status badge on this page updates hourly: rising, peaking, cooling, or archived once coverage stops for 48 hours.
Coverage (20)
- Idaho Matters Doctor Roundtable: August 19, 2026 boisestatepublicradio.org · 52d ago
- Brain-Swelling Disease Blamed For Recent Deaths In CA As Cases Surge Nationwide Patch · 52d ago
- A deadly brain-swelling illness spread by mosquitoes is on the rise in the US Yahoo News Canada · 52d ago
- West Nile Cases Are Rising This Summer After 8 Deaths Reported Across the U.S. What to Know Before Your Next Backyard Hang Yahoo Health · 52d ago
- Rain brings in more mosquitoes as the West Nile virus poses threat Yahoo · 52d ago
- Warning as deadly illness spread by mosquitoes on the rise in the US The Independent · 52d ago
- Idaho officials report season's first serious West Nile case, urge mosquito precautions KTVB · 52d ago
- Southwest Idaho resident contracts meningitis from West Nile Virus infection, health officials say Idaho Capital Sun · 52d ago
- 2026's first case of West Nile meningitis found in Canyon County Idaho Press · 52d ago
- Idaho Residents Warned After Serious West Nile Virus Case KIDO Talk Radio · 52d ago
- A deadly brain-swelling illness spread by mosquitoes is on the rise in the US Yahoo · 52d ago
- First West Nile virus meningitis case reported in Idaho this year East Idaho News · 52d ago
- Rain brings in more mosquitoes as the West Nile virus poses threat CIProud.com · 52d ago
- West Nile Virus Returns Every Summer. Here’s Why Boulder County Can’t Eliminate the Risk longmontleader.com · 52d ago
- Map Shows Mosquito-Borne West Nile Virus Spreading Across US, Killing Eight Newsweek · 52d ago
- "I didn't think I'd make it." Woman nearly dies from West Nile Virus yahoo.com · 52d ago
- Drought drops mosquitoes, but West Nile danger rises Audacy · 52d ago
- The Worst Part of Mosquito Season Is Yet to Come parade.com · 52d ago
- "I didn't think I'd make it." Woman nearly dies from West Nile Virus; Pima County confirms 19 cases this year KGUN 9 · 52d ago
- A deadly brain-swelling illness spread by mosquitoes is on the rise in the US The Independent · 52d ago
Topics
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