In what can only be described as a stunning failure of state and local policy and leadership, Los Angeles County recorded its highest tally of flea-borne typhus cases in 2025, confirming 220 diagnoses, up from 187 the year before, according to the county's Department of Public Health. Almost nine in ten of those patients ended up hospitalized. Fleas that feed on infected rats, opossums, and other small mammals carry the bacteria behind the disease to humans, and Los Angeles has watched the case count climb for years. The 2025 total marks the sharpest jump yet.
Dr. Dean Winslow has practiced infectious disease medicine for fifty years. He taught at Stanford, ran COVID-19 testing programs for the federal government, and served as President Trump's 2017 nominee for assistant secretary of defense for health affairs. Asked whether a typhus outbreak in one of the wealthiest counties in America points to a broader failure in public health and sanitation, Winslow gave a one-word answer. "Absolutely," he told the Daily Signal.
"It's largely an issue of ... people living in just horrible conditions in close proximity to rats," Winslow said, naming rodents as the primary vector for the infection's spread.
The conditions track with the county's homelessness numbers. Homelessness in LA County rose 3.3% over the past year, and in the city of Los Angeles itself the figure climbed 7.9%, according to data from the Los Angeles Homeless Services Authority. Winslow said encampments put residents at heightened risk given
