Los Angeles County recorded its highest number of flea-borne typhus cases in 2025, with 220 confirmed diagnoses and almost nine in ten patients reportedly hospitalised. The rise has renewed debate over homelessness, sanitation, rat control and whether public-health authorities are adequately containing a preventable disease
INR Report: Based on reporting by Tyler Durden for ZeroHedge, published 21 August 2026. Read the original report HERE
Typhus Cases Reach Record Level
Los Angeles County recorded 220 confirmed cases of flea-borne typhus in 2025, up from 187 the previous year, according to figures cited from the Los Angeles County Department of Public Health.
Almost nine in ten patients were reportedly hospitalised.
Flea-borne typhus is caused by bacteria transmitted to people through infected fleas, which can feed on rats, opossums and other small mammals.
The rise has prompted renewed attention to the conditions allowing infected flea populations to spread in one of America's wealthiest metropolitan areas.
Infectious-Disease Specialist Points to Sanitation
Dr Dean Winslow, an infectious-disease physician with five decades of experience, told the Daily Signal that the outbreak reflected broader public-health and sanitation problems.
Read the Daily Signal report HERE
Winslow said the spread was largely associated with people living in poor conditions close to rats.
He identified rodent control as a priority and argued that large homeless encampments can create environments where rats and fleas thrive.
Los Angeles County's homelessness numbers have also increased, according to figures cited in the report.
ZeroHedge says homelessness rose 3.3% across Los Angeles County over the previous year, while the city of Los Angeles recorded a 7.9% increase.
Rat Control Becomes Part of the Debate
The article also points to changes in California's rodent-control policies.
In 2020, Governor Gavin Newsom signed Assembly Bill 1788, restricting the use of several rodenticides because of concerns about their impact on mountain lions and other wildlife.
Winslow suggested those restrictions may have made rat control more difficult by pushing pest-control operators toward traps and less potent methods.
That remains an interpretation rather than proof that the legislation caused the increase in typhus cases.
Multiple factors can influence flea and rodent populations, including sanitation, housing conditions, food waste, weather and the density of animals capable of carrying infected fleas.
Public Told to Reduce Exposure
Los Angeles County public-health guidance places considerable emphasis on individual prevention.
Residents are advised to keep pets on flea-control products, avoid stray animals, clear yard debris, secure rubbish in tightly sealed containers and report rodents or opossums to animal-control authorities.
Those measures can reduce exposure.
But critics argue they do not answer the larger question of whether local authorities are sufficiently controlling the environments where rats and fleas are multiplying.
Internal Records Raise Further Concerns
Christopher Rufo, a senior fellow at the Manhattan Institute, examined approximately 1,000 pages of Los Angeles County health-department records obtained through public-records requests.
Read the City Journal report HERE
Rufo argues that the documents portray a public-health system struggling to keep ahead of outbreaks involving typhus and other rodent-associated diseases.
He has linked the problem to two broad factors: the proliferation of homeless encampments and restrictions on effective rodenticides.
Those claims are part of his interpretation of the records and should be distinguished from direct findings by the county health department.
Is “Medieval Disease” the Right Description?
The ZeroHedge headline describes the problem as the return of “medieval diseases.”
That framing is deliberately provocative.
Flea-borne typhus is not new, nor was it confined historically to the medieval period.
The more important point is that diseases associated with poor sanitation, rodent exposure and inadequate vector control can re-emerge even in wealthy modern cities when the conditions allowing transmission persist.
The issue is therefore less about history repeating itself than about basic public-health systems failing to control known risks.
Hospitalisation Is the Most Concerning Measure
The case count alone is significant.
But the reported hospitalisation rate is particularly noteworthy.
If almost nine out of every ten confirmed patients required hospital treatment, the disease is creating a meaningful burden on local healthcare services as well as posing a risk to individuals.
The underlying outcome measures therefore extend beyond total case numbers.
Authorities should be tracking:
confirmed cases, hospitalisations, deaths, geographic clusters, rodent density and flea infection rates.
Those figures would provide a clearer picture of whether control measures are working.
Policy Failure or Multiple Causes?
ZeroHedge presents the rise primarily as a failure of state and local leadership.
That conclusion goes further than the data alone can establish.
Homeless encampments, poor sanitation and rodent populations may all contribute to transmission.
Restrictions on rodenticides may also make pest control more difficult.
But demonstrating causation requires more than showing those conditions occurred at the same time as rising case numbers.
The more useful accountability question is whether Los Angeles authorities identified the increase early, implemented effective vector-control measures and measured whether those measures reduced transmission.
Does This Affect New Zealand?
The immediate outbreak is confined to Los Angeles, but the underlying public-health lesson is relevant to New Zealand.
Vector-borne disease control depends heavily on basic systems that are easy to overlook when they are working properly: sanitation, housing, rubbish collection, pest management and early disease surveillance.
Large concentrations of people living in temporary or unsanitary conditions can increase exposure to rodents and other disease vectors.
For New Zealand, the lesson is preventative.
Public-health systems should monitor unusual increases in infectious disease alongside environmental conditions that can enable transmission.
Current Relevance
The immediate outcome to watch is whether Los Angeles can reverse the rise in flea-borne typhus cases.
The most useful indicators will be the 2026 case count, hospitalisation rate and any evidence that rodent and flea-control programmes are reducing transmission.
Long-Term Relevance
Urban public health is often judged by sophisticated healthcare systems.
But some of the most important protections remain basic.
Clean streets.
Secure rubbish.
Safe housing.
Rodent control.
Disease surveillance.
When those systems weaken, infections associated with much poorer environments can return surprisingly quickly.
Historic Relevance
Modern cities dramatically reduced many infectious diseases through improvements in sanitation, housing and pest control long before advanced medicine became widely available.
That history remains relevant.
Public health is not maintained automatically simply because a society is wealthy.
It depends on infrastructure and prevention continuing to work.
Los Angeles' rising typhus numbers provide a reminder that when those foundations deteriorate, old diseases can find new opportunities.
Source
Tyler Durden — ZeroHedge — 21 August 2026
Original ZeroHedge report HERE
Daily Signal interview with Dr Dean Winslow HERE
City Journal report HERE
Independent reporting. Original context. Credited sources.