Plague Case Reported in CaliforniaNewton’s Cure Was Toad Vomit

The word plague does not belong in a modern headline. It feels like something that should stay tucked between
“medieval tapestry” and “please stop ringing that bell, sir.” And yetevery so oftenplague makes a cameo in the
American West, including California.

The good news: this isn’t a time-travel event. It’s a rare, well-understood bacterial disease with real tests,
real treatments, and real prevention steps that don’t involve leeches, lavender sachets, or moving to a castle.
The other news (equal parts hilarious and horrifying): one of history’s greatest scientific minds, Isaac Newton,
once flirted with a “cure” involvingbrace yourselftoad vomit.

A Plague Case in California: Rare, Real, and Very 2025

In August 2025, health officials in El Dorado County confirmed a human plague case in the South Lake Tahoe area.
Investigators believed the exposure was most likely connected to a flea bite during outdoor activity (yes, really:
nature is adorable and also occasionally chaotic).

County statements around the case emphasized two points that can live peacefully in the same sentence:
human plague is extremely rare, and it can be serious if untreated.
Translation: don’t panicbut don’t ignore it either.

The same updates also referenced ongoing surveillance in the Tahoe Basin. Over multiple years, officials noted
evidence of plague activity among local rodentsexactly the kind of quiet background detail that makes public health
workers the real-life protagonists of summer.

Is California a “plague state”?

California isn’t a plague hotspot the way the word “plague” might make you imagine. But parts of the rural West
have long had natural plague cycles in wildlife. California public health data across decades show that human cases
occur occasionally, usually tied to contact with wild rodents, their fleas, or sometimes pets that tangle with that
ecosystem.

What Plague Actually Is (No, It’s Not a Medieval Curse)

Plague is caused by a bacterium called Yersinia pestis. It’s a zoonotic diseasemeaning it circulates in
animals and can spill over to people under the right conditions. The bacterium isn’t new, and neither is our
understanding of how it behaves.

Here’s the key mental reset: when people say “the plague,” they often picture the Black Death. That historic
catastrophe involved the same organism, but the modern context is completely different: sanitation, surveillance,
antibiotics, and faster diagnosis change the story dramatically.

Three forms of plague

• Bubonic plague: the most common form in the U.S. Historically infamous for swollen lymph nodes
  (called “buboes”).
• Septicemic plague: infection in the bloodstream, which can become severe quickly.
• Pneumonic plague: infection in the lungs; the most serious form and the one that can spread
  person-to-person through respiratory droplets in rare circumstances.

How Plague Spreads in California: Fleas, Rodents, and the Outdoor Triangle

Plague transmission in California most often comes down to one tiny middleman: the flea. Wild rodents (like ground
squirrels and chipmunks) can carry infected fleas. When plague activity flares in a rodent population, animals may
die off, and hungry fleas look for a new hostsometimes a pet, sometimes a person.

Common exposure scenarios

• Camping near rodent burrows or in areas with unusually quiet, “empty” rodent colonies
• Handling sick or dead rodents (even “just moving it off the trail” can be risky)
• Pets chasing rodents and bringing fleas closer to humans
• Outdoor work or recreation in higher-elevation regions where plague is naturally present

None of this means you should stop hiking. It means you should hike like an adult: with bug spray, basic caution,
and the humility to accept that squirrels are not your friendsno matter how politely they sit.

Symptoms: What Plague Can Look Like Early On

Early symptoms can mimic other illnesses, which is part of why clinicians and public health teams take exposure
history seriouslyespecially in the rural West.

Possible symptoms of bubonic plague

• Sudden fever and chills
• Weakness or fatigue that feels heavier than a normal “I slept weird” day
• Headache and body aches
• Painful, swollen lymph nodes (often in the groin, armpit, or neck)the classic “buboes”

Symptoms that deserve urgent attention

If someone develops breathing symptomscough, chest pain, shortness of breathafter plausible exposure in an area
with known plague activity, that’s an “urgent medical evaluation” situation, not a “let’s google this for three
hours” situation.

Important note: many things cause fevers and swollen nodes. Plague is rare. The goal is not to diagnose yourself;
it’s to seek care promptly when symptoms + exposure history line up.

Treatment: Antibiotics, Not Amphibians

Plague is treatable. The biggest risk factor is delay: the sooner appropriate antibiotics begin after plague is
suspected, the better the outcome tends to be.

What treatment typically involves

Treatment is clinician-directed and depends on severity and form of disease, but modern guidance in the U.S.
includes antibiotics such as gentamicin and certain fluoroquinolones among first-line options. Other antibiotics
may be used based on the clinical situation.

In practical terms, this means the modern “cure” is boring in the best way: hospital protocols, lab tests,
medication, and follow-up. No smoke. No chanting. No suspicious lozenges made from chimney-adjacent wildlife.

Prevention Tips That Actually Work (and Don’t Require a 1600s Apothecary)

Most prevention advice is simple, realistic, andcruciallydoes not involve upsetting any toads.

Outdoor prevention

• Don’t feed squirrels, chipmunks, or other wild rodents (they will not repay you with friendship)
• Don’t touch sick, injured, or dead rodents
• Avoid camping or resting near animal burrows
• Use insect repellent and consider long pants/socks in high-rodent areas
• Keep food secured so you’re not hosting the world’s worst potluck for wildlife

Pet-focused prevention

• Keep pets on flea control, especially if you camp or live near wild rodent habitats
• Don’t let pets hunt or play with rodents
• Watch for pet illness after outdoor trips and call a veterinarian if something seems off
• Limit close face-to-face contact with a coughing, ill pet until it’s evaluated

The theme here is not “fear the forest.” It’s “respect the forest.” Nature doesn’t hate you. It’s just not
obligated to keep you comfortable.

Newton’s Toad-Vomit Cure: A Reminder That Genius Is Not a Vaccine

Now for the historical palate cleanser (which, ironically, is still less gross than what Newton proposed).
Isaac Newtonyes, the calculus-and-gravity Newtononce recorded an unusual plague remedy in handwritten notes
connected to older medical ideas of his era.

The gist, without turning this into a “DIY: Regret Edition” tutorial: the treatment involved a toad, its secretions,
and the belief that the resulting preparation could draw out illness. This wasn’t Newton freestyling modern
pharmacologyit was a brilliant mind living in a time when disease theory and medicine were still entangled with
tradition, symbolism, and experimental guesswork.

So… why bring this up in a modern California plague story?

Because it’s the perfect contrast:
today’s plague response is built on surveillance, lab confirmation, and antibiotics.
Newton’s era was a different worldone in which even top thinkers could be brilliant in physics and wildly
off-base in medicine.

It’s also a neat reminder of how science actually works: progress isn’t a straight line from “wrong” to “right.”
It’s a messy road from “hmm, maybe?” to “we tested it,” to “please never do that again,” to “here’s what actually
helps.”

And because this needs to be said out loud: do not attempt historical plague remedies. Toads and
their secretions can be toxic, and handling wildlife is a great way to earn a completely different medical headline.

Bottom Line

A plague case reported in California is news precisely because it’s unusualnot because it signals a looming
medieval reboot. In the West, plague persists in wildlife cycles, and rare human infections can occur, especially
with flea exposure around rodent habitats. The risk to the general public remains low, but awareness matters for
people who camp, hike, work outdoors, or live in higher-elevation areas where plague activity is known to occur.

If you take away one thing, make it this: modern plague is treatable, and early care matters.
And if you take away two things, let the second be: Isaac Newton was a genius, not a pharmacist.

Experiences: What It Feels Like When Plague Pops Up on the Local News (500-ish Words)

If you’ve spent time in California’s mountain townsespecially around places like Lake Tahoeyou know the rhythm of
outdoor life comes with its own unofficial weather report: sun, smoke, snowpack, and “why is the chipmunk staring
at my trail mix like it pays rent?”

That’s why a headline about plague can land with a weird mix of reactions. Some people laugh firstbecause the word
feels absurdly ancientthen immediately text a friend: “Wait, are we still camping this weekend?” The honest answer
is usually yes… but with slightly more bug spray and slightly less casual snacking near squirrel hangouts.

In communities that live close to nature, the response is often practical rather than panicked. Locals might swap
the kind of advice you’d expect: “Don’t let your dog chase ground squirrels,” “Keep flea meds current,” “Don’t
pitch your tent next to burrows,” and “Please stop feeding wildlife like you’re auditioning for a woodland musical.”
The tone is half neighborly and half exhausted, because these aren’t brand-new rulesthey’re the same commonsense
habits that help prevent a whole menu of outdoor problems.

Campers and hikers tend to adjust fast. You’ll see people apply repellent before a trail like it’s part of their
pre-hike playlist. Some switch from sitting directly on the ground to using a camp chair. Others become suddenly
interested in reading signage at trailheadsan activity normally reserved for people who have already gotten lost.

Parents often have the most relatable reaction: “Okay, everyone stop touching everything.” That’s not plague panic;
that’s parenting. It’s the same energy as “don’t lick the shopping cart,” just in a prettier setting with pine trees.
Families who’ve visited national parks before may even remember old advisories about not feeding squirrels and
watching for flea exposureproof that public health messages do stick, even when we pretend we’re too cool to read
them.

The most common “experience” takeaway is perspective. People who live near the Sierra or frequently visit the
backcountry already accept that the outdoors is real life, not a curated photo set. There are ticks in the grass,
smoke in late summer, and sometimes bacteria in a flea that doesn’t care about your vacation plans. The point isn’t
to fear it. The point is to respect it.

And honestly? Once you realize modern plague prevention is mostly “don’t cuddle rodents, don’t ignore flea control,
and see a clinician quickly if you’re sick after exposure,” the headline becomes less scary and more… motivating.
You pack smarter. You keep your dog from acting like a furry action hero. You enjoy the mountains. You let Newton
keep his laws of motionand you let modern medicine handle the medicine.

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