Science
An L.A. AIDS trailblazer has advice on how to stay hopeful in dark times for public health
The year was 1987. Phill Wilson was 31, a recent transplant to L.A. from his hometown of Chicago. A mysterious infection that weakened its hosts’ immune systems was killing people at a terrifying rate, while the Reagan administration downplayed and openly joked about the disease. Some major news outlets initially wrote off the emerging epidemic as a “gay plague,” insinuating that other Americans didn’t need to worry about it.
Wilson’s doctor told him that he was HIV-positive, had six months to live and that he should get his affairs in order.
Instead, Wilson decided to “focus on the living.”
“Let’s use the time I have to do something,” he recalls thinking.
“My life,” Wilson says now, at age 69, “is that something.”
Wilson went on to found L.A.’s Black AIDS Institute, using the nonprofit think tank to draw attention to the lack of outreach, prevention and treatment programs tailored to Black Americans — despite the disproportionate toll that AIDS had taken on them.
Wilson not only defied his doctor’s orders. He also defied the odds, surviving one of the world’s deadliest epidemics, along the way preaching the message of prevention and care, from demonstrations in the nation’s capital to the sanctified realm of the Black church.
A participant holds a sign referring to Rock Hudson during a three-hour walkathon through Hollywood on July 28, 1985, in a fundraiser sponsored by AIDS Project Los Angeles.
(Jim Ruymen / Associated Press)
It’s been 40 years since Angelenos took to the streets for the first time to raise money for research in the wake of screen legend Rock Hudson’s stunning announcement that he had AIDS in 1985. That’s why it’s so hard for Wilson to accept that today, as L.A. is set to hold its annual AIDS Walk on Oct. 12 in West Hollywood, a new era of death and grief could be on the horizon.
Just as success appears within reach to end fatalities from HIV/AIDS worldwide, the U.S. — the global leader in that battle — seems to be in retreat.
In recent months, Republicans in Congress have followed up on moves by the Trump administration by calling for deep cuts to federal funding for HIV/AIDS prevention and home treatment, leaving public health officials and LGBTQ+ nonprofits in L.A. and elsewhere with few options besides cutting staff and suspending programs. AIDS organizations worldwide are also alarmed over the administration’s gutting of foreign aid initiatives for nations in Africa and elsewhere that cannot afford to fight infectious diseases on their own.
Wilson worries that 40 years of work that he and other activists, public health experts and providers, and members of the LGBTQ+ community have done to mobilize will be reversed in the space of a presidential term.
Phill Wilson reflects on the friends who lost their lives to AIDS while standing next to what he calls “My Wall of Dead People.”
(Genaro Molina / Los Angeles Times)
“I never imagined that I would be 69; I never imagined that I would still be alive and healthy,” Wilson said. “And I also never imagined that the trajectory of the AIDS pandemic would take us from malicious neglect, during the Reagan years, to a powerful movement that changed the trajectory of treatment and care and prevention not just for HIV and AIDS but for chronic diseases and infectious diseases in general, to … a day when in fact our government was actively engaged in dismantling institutions and systems that … were actually saving lives.”
Wilson, who also sits on the board of trustees at amfAr, one of the top AIDS research foundations, has been lauded by Republican and Democratic presidents. He has also attended the funerals of too many friends killed by the disease to count — giving him both a global and a painfully personal perspective on a disease that has infected more than 88 million people and claimed more than 42 million lives worldwide, according to the 2024 L.A. Annual AIDS Surveillance Report.
AIDS-related illnesses have killed at least 30,000 people in Los Angeles County alone, according to a report from the county’s Commission on HIV.
There is still no cure for AIDS. But since the introduction of powerful antiretroviral drugs in the 1990s that allow those infected to continue living healthy lives — and more recent preventative treatments such as PrEP — fatalities have plunged. In 2020, the U.S. government set a goal of reducing AIDS fatalities by 90% over the following decade.
But a team of researchers from UCLA and other institutions recently concluded that the Trump administration’s plan to shutter the U.S. Agency for International Development, a foreign aid program, and rescind already-appropriated funding to it could lead to millions of people dying of HIV/AIDS over the next five years who could have been protected through HIV outreach, testing and lifesaving drugs.
“With the current policies in place, there is a very good chance that we’re going to see a huge spike in new infections and we’re going to return to the days of people dying of HIV and AIDS when that’s preventable,” Wilson said.
Closer to home in L.A., the successes have been uneven.
The racial disparities that sparked Wilson’s activism at the dawn of the pandemic have narrowed but still exist.
Black Angelenos make up just 8% of the county’s population but represented roughly 18% of HIV cases recorded between January 2023 and December 2024, the most recent period for which sufficient data were available on the county’s public health dashboard. Latinos made up about 60% of cases, though this group constitutes 49% of the county’s population.
Wilson doesn’t need these grim statistics to remind him of the stakes involved if HIV/AIDS funding gets cut.
His partner, Chris Brownlie, was diagnosed with AIDS in1985, and after four years of suffering, died of the illness. That wrenching experience prompted Wilson to become an activist full time.
Wilson survived his own near-death illness stemming from AIDS in 1995, thanks to a new treatment that kept the virus from replicating. By then he had grown used to attending AIDS vigils and delivering eulogies for others who died too soon. Eventually he became AIDS coordinator for the city of Los Angeles and director of policy and planning at AIDS Project Los Angeles, now called APLA Health.
Phill Wilson, founder and former head of the Black AIDS Institute, meets President Obama.
(Courtesy of Phill Wilson)
Today, Wilson’s home radiates with colorful artworks from his private collection and vibrant African wood carvings climbing toward the loft ceiling. There are pictures of him shaking hands with Presidents George W. Bush, Clinton and Obama.
Facing Wilson as he speaks is a Kwaku Alston portrait of late South African President Nelson Mandela, commissioned when Wilson persuaded that nation’s first Black president to sit for a portrait session to celebrate him being honored by the Black AIDS Institute.
Situated among these bursts of color and patterns and Afrocentric pride, though, are photos of unspeakable losses.
It’s chilling to see the many images of fallen Black gay men — among them the poet and activist Essex Hemphill; Marlon Riggs, maker of a seminal 1989 film on the Black queer experience “Tongues Untied,” and the South African anti-apartheid and AIDS activist Simon Nkoli, who helped organize Africa’s first Pride march in 1990 — and realize how many of Wilson’s brothers in spirit and in struggle were cut down by the disease in their prime.
“My nephews call this wall my ‘Wall of Dead People,’” Wilson said, “because so many of the photographs are of people who are no longer with us, or photographs where I’m the only one alive.
“My motivation is to keep the memories of all of my friends who we lost during the AIDS pandemic alive,” he said, “to remind people that they were here, and they meant something and did work and they had lives and they had loves.”
Standing in front of a piece by artist Woodrow Nash, Phill Wilson describes the art that fills his home in Los Feliz.
(Genaro Molina / Los Angeles Times)
Wilson remembers how hard it was at first to promote HIV/AIDS awareness in L.A.’s Black community.
He had grown frustrated with the limited breadth of AIDS outreach in the 1980s and ‘90s. The whole model seemed too “white centric,” conspicuously lacking in outreach that took into account the obstacles that queer people of color faced. It was daunting enough to come out as gay in some Black and brown households, let alone speak openly about a deadly epidemic whose uncertain origins had fueled wild, often-racist conspiracy theories suggesting that Black people were chiefly responsible for its spread.
The idea of inviting LGBTQ+ advocates into your home to talk about prevention may have worked in settings where gay men were affluent (and mostly white), but many lower-income queer Angelenos (many of whom where nonwhite) still lived with their families.
He knew he needed an “unapologetically Black” game plan, which included co-founding the National Gay and Lesbian Leadership Forum, an organization whose meetings allowed Black AIDS activists in L.A. and other cities to network and exchange best practices with peers who looked like them and could relate to their life experiences.
Wilson, who grew up in the projects of Chicago’s South Side and attended a Black church, also tried to enlist L.A.’s Black pastors to help spread the word about AIDS in their neighborhoods. It was slow going at first.
He recalls breaking with protocol at one Black house of worship by taking to the raised lectern — traditionally the exclusive domain of the preacher — to warn worshipers about the risks of ignoring the deadly disease killing their sons, brothers, nephews and nieces.
His stern address was mainly met with silence. But as Wilson walked toward the exit, minister after minister held out a hand to take one of the educational fliers he’d brought to hand out.
“They already knew that AIDS had visited their churches,” Wilson said.
In July, Wilson was struck again by memories of days gone by when Jewel Thais-Williams, the founder of the legendary Black queer club Jewel’s Catch One on Pico Boulevard, died at age 86.
Wilson remembers when the club, now a mixed venue, was known as a sanctuary for the city’s Black and brown queer community. Williams presided as a surrogate mother and life coach for Black gays and lesbians, transgender Angelenos of color, people living with HIV who felt stigmatized because of their status, and those who didn’t necessarily feel at home in mostly white venues. Williams had also established the first housing complex in the U.S. for Black women living with HIV and their children and started a holistic wellness clinic for members of the city’s Black and brown communities.
Wilson attended Williams’ public memorial at “The Catch” in August, alongside hundreds of friends, loved ones, politicians, former drag performers and club staffers. Some older club patrons strode in with the aid of walking sticks, less agile than they used to be but determined to pay their respects to “Mama Jewel.”
Everyone dressed as if for Sunday morning service — but the event morphed midway into a Sunday afternoon tea dance, with the crowd grooving under the disco balls to gospel-inflected house music, evoking the roof-raising atmosphere that made the club famous back in the day.
Wilson took to the stage to pose with L.A. Mayor Karen Bass as she presented a proclamation declaring the club a historical landmark.
In some ways, that moment of light seems like a long time ago. The current situation for public health in L.A. and across the country feels much darker.
That said, Wilson has learned to find solace in times of sadness and dread by taking the long view.
Having weathered the Reagan administration’s negligence, twice outlived his own death sentence in the AIDS crisis and recovered from a stroke two years ago, he has no patience for those who wallow in hopelessness about the federal cuts.
What people must do now, Wilson says, is the same thing that catalyzed him and local leaders such as Williams in the initial war against AIDS: Find ways to help, refuse to be silent and heed a piece of advice that may not sound satisfying in the moment but has sustained him through bouts of indignation and grief: “This too shall pass.”
Wilson realizes that, much like in the ‘80s, not everyone in the queer community or society at large feels personally invested in the fight against HIV/AIDS. For them, he has another bit of wisdom: Just because a government engaged in upending practices and slashing programs has yet to attack you or those you love doesn’t mean you should be a bystander to the damage done to others.
Wilson recites a James Baldwin line from his “Open Letter to My Sister, Miss Angela Davis”: “For if they come for you in the morning, they will be coming for us at night.”
“We may not know it,” Wilson says, “but we all have skin in the game.”
Science
How Rising Home Insurance Costs Are Linked to Credit Scores
Two friends bought nearly identical homes last year, in the same northern Minnesota neighborhood, for the same price.
But Tara Novak pays more than twice as much for home insurance as Petra Rodriguez. The only difference? Ms. Novak has a lower credit score.
Across the country, people with weaker credit histories are paying far more for home insurance than owners with spotless records.
Where the home insurance rate gap between “fair” and “excellent” credit is higher
Home insurance premiums have risen rapidly in recent years, fueled by climate change, building costs and inflation. The price shock has rippled into the real estate market, dragging down home prices in areas vulnerable to disasters and leading insurers to abandon homeowners in risky places.
But these dynamics obscure another problem: The home insurance market has cleaved in two along a boundary defined more by a customer’s personal history than by the risk of a disaster hitting their home.
Americans with weaker credit histories, usually from missed payments or high amounts of debt, now pay significantly more for insurance, regardless of where they live, two new studies have found. While those with poor credit histories often can’t purchase homes at all, people with “fair” scores, which range from around 580 to 669, are paying twice as much in some places as people with “excellent” scores of about 800 or higher. And the gap is growing.
Insurers use a metric based on credit history known as an insurance score to set rates, and the figure tracks closely with a customer’s credit score.
The penalty for having a “fair” credit history versus an “excellent” one
States with the biggest pricing gaps
That can mean owners of identical homes, like Ms. Novak and Ms. Rodriguez, pay wildly different rates to insure them. For most people, it’s now just as expensive to have a credit score of “fair” as it is to live in an area likely to experience a disaster like a hurricane or wildfire. About 29 percent of consumers have credit scores that are categorized as “fair” or “poor.”
“There’s so many reasons people have bad credit,” Ms. Novak said. “It’s not like I’ve ever not paid a bill on time. I’m a stickler on my bills, I’m a stickler on my rent, never been late. This is not fair.”
“The choice to use credit scores in pricing means that those lower-credit home owners in risky areas are effectively subsidizing more affluent high-credit homeowners who also live in risky areas,” said Nick Graetz, assistant professor of sociology at the University for Minnesota, who wrote one of the recent papers. “So in a lot of ways, you can keep your insurance price down if you’re high income, high credit — even if you live on the coast of Florida.”
A handful of states have banned insurers from using credit data because of concerns about fairness and the potential for discrimination against low-income people and people of color, but the majority allow it.
For those with both weaker credit and high disaster risk, the combination can set them up for a downward spiral: disasters tend to be followed by decreases in credit scores as people use credit cards and bank loans to recover. That can lead to higher insurance rates, pushing monthly housing costs further out of reach.
“When a disaster hits, there’s a loss of income that occurs, and then that can impact someone’s credit score because they can’t pay their debt, they can’t pay their rent, they can’t pay their mortgage,” said Lance Triggs, executive vice president at Operation HOPE, a financial literacy nonprofit. “And now they’re faced with higher insurance premiums post-disaster.”
A working paper released today by the National Bureau of Economic Research found that homeowners with the lowest credit scores paid, on average, $550 more in 2024 for home insurance than those with the highest scores.
The findings broadly track with data from Quadrant Information Services analyzed by The New York Times, which found that, on average, lower credit scores meant higher premiums across every state that allowed the practice. Dr. Graetz used the same data set for his research, which he did in collaboration with the Consumer Federation of America and the Climate and Community Institute.
When a windstorm last year hit the home of Audrey Thayer, a city council member in Bemidji, Minn., it ripped the siding off her house and stripped shingles from her roof.
Ms. Thayer’s insurance did not cover all the damage. As she fought her insurer for more money, she opened new credit cards and bank loans to repair her home. Her credit score dropped as she tried to find a new insurance plan.
Ms. Thayer, a member of the White Earth Nation, said she was not aware that her credit score could affect her home insurance rates, even though she teaches about credit ratings at a nearby tribal college. “Most of the folks here do not have good credit,” said Ms. Thayer, whose community is one of the poorest in the state. “I did not know what a credit score was until I was 35 or so.”
In Texas, the advocacy group Texas Appleseed found that some insurers charge people with poor credit up to 12 times as much as people with excellent credit for certain policies, said Ann Baddour, the director of the nonprofit’s Fair Financial Services Project.
Higher costs have serious implications for low-income homeowners who live in the path of hurricanes, said Nadia Erosa, the operations manager at Come Dream Come Build, a nonprofit community housing development organization. After the Brownsville, Texas, region saw intense flooding last spring, some residents turned to companies offering high-interest loans to fund repairs, she said, raising the risk of the disaster-credit spiral.
“Delinquencies are going up because people cannot afford their payment,” she said.
The price of risk
Before they can get a mortgage, homebuyers are usually required by lenders to purchase home insurance.
“Households with insurance have fewer financial burdens, fewer unmet needs, they recover faster, they’re more likely to rebuild,” said Carolyn Kousky, an economist and founder of Insurance for Good, a nonprofit that focuses on finding new approaches to risk management. “Yet the people who need insurance the most are the least able to afford it.”
Insurance companies consider a variety of factors when setting the premium for a property. They might examine the age of the roof, or the area’s vulnerability to hurricanes or wildfires. They factor in how much it would cost to rebuild the house if it were damaged.
Insurers have argued that credit history is also worth considering because people with low scores tend to file more claims than those with excellent scores, an assertion that is backed up by the working paper published in the National Bureau of Economic Research today. This likely happens because people with weaker credit histories tend to have less income, and when their home is damaged, they file insurance claims for smaller fixes that a wealthier homeowner might pay for out of pocket.
Paul Tetrault, senior director at the American Property Casualty Insurance Association, a trade organization, said credit scores are a valid way to price premiums.
But others argue that using credit information to price insurance doesn’t make sense.
Because a homeowner pays for insurance upfront, “it’s not like you’re really extending a loan to the customer where you would be worried about the risk of repayment,” Ms. Kousky said. She points out that insurance companies can opt not to renew a homeowner’s policy if they believe it is too risky — a tactic they have been using with increasing frequency.
The NBER analysis found that homeowners who want to pay less for insurance should pay off debt to raise their credit score rather than replace roofs and make other improvements to avoid damage when disaster strikes.
Others believe that even if credit scores are accurate predictors of future claims, they shouldn’t be used to set premiums because that can perpetuate or worsen disparities. For example, people in their mid-20s who are Black, low-income, or grow up in impoverished regions have significantly lower credit scores than their peers, a July working paper from Opportunity Insights, a not-for-profit organization at Harvard University, found.
“When the government and the financial system mandate that we buy a product, there’s a special obligation to make sure the pricing is fair,” said Doug Heller, director of insurance at the Consumer Federation. “To me that is an absolutely solid reason, just like we don’t allow pricing based on race or income or ethnicity or religion.”
A natural experiment
A handful of states, including California and Massachusetts, have banned or limited the use of credit scores in setting home insurance premiums, despite opposition from the insurance industry.
In Nevada, where a temporary pandemic-related rule prevented insurers from using credit history to increase premiums for existing customers from 2020 to 2024, companies refunded approximately $27 million to nearly 200,000 policyholders, said Drew Pearson, a spokesman for the Nevada Division of Insurance.
Perhaps the clearest example of the effects of these bans comes from Washington State, which banned the use of credit information in setting home insurance premiums starting in June 2021. The rule immediately faced legal challenges, and was in effect for just a few months until it was overturned in court.
But the episode allowed researchers to evaluate the effect of credit factors on insurance premiums. When the rule took effect, people with the lowest credit scores saw a decrease in premiums of about $175 annually while those with the highest scores saw an increase of about $100, the NBER analysis found.
“We could see the dynamics of insurance pricing for the same households over time,” said Benjamin Keys, a professor at the University of Pennsylvania’s Wharton School, who co-authored the paper.
What homeowners paid before and after a ban on credit-based pricing in Washington State
Values compared with premiums paid by homeowners with “medium” credit scores (717 to 756)
In Minnesota, where Tara Novak, Petra Rodriguez and Audrey Thayer live, a state task force looked at ways to lower insurance costs for residents. It recently considered a ban or limit on the use of credit scores to set rates, but did not move forward with a recommendation.
Ms. Rodriguez said she doesn’t think it’s fair that her friend Ms. Novak should have to pay so much more for insurance to live in an identical house.
A credit score doesn’t capture anything about a person’s habits, or what they’re like as a tenant, or even years of on-time rent payments, she said. “It’s not who you are,” she said.
Methodology
Home insurance policy rates were supplied by Quadrant Information Services, an insurance data solutions company. The rates shown are representative of publicly sourced filings and should not be interpreted as bindable quotes. Actual individual premiums may vary.
‘States with the biggest pricing gaps’Rates shown are based on a home insurance policy with $400,000 of dwelling coverage and a $100,000 liability limit on a new home, for a homeowner age 50 or younger. Rates are averaged for all the individual company filings represented in the sample, which add up to a majority of the market share in each state but do not cover all active insurers in the state. Rates are also averaged to the state level from zip code level data.
‘The credit penalty in each state’Each insurance company incorporates credit history information differently, often using proprietary methods, so the scores do not map directly to FICO credit scores.
‘What homeowners paid before and after a ban on credit-based pricing in Washington State’Data shown are based on observations of real home insurance policies and homeowner credit scores from ICE McDash analyzed by the researchers of Blonz, Hossain, Keys, Mulder and Weill (2026). The price comparisons across credit score tiers controlled for variance in disaster risk, insurance policy characteristics, geography, and other year to year fluctuations.
Science
Earth is warming faster than previously estimated, new study shows
Planetary warming has significantly accelerated over the past 10 years, with temperatures rising at a higher rate since 2015 than in any previous decade on record, a new study showed.
The Earth warmed around 0.35 degrees Celsius in the decade to 2025, compared to just under 0.2C per decade on average between 1970 and 2015, according to a paper published on Friday in the scientific journal Geophysical Research Letters. This is the first statistically significant evidence of an acceleration of global warming, the authors said.
The past three years have been the hottest on record, compared to the average before the Industrial Revolution. In 2024, warming went past 1.5C, the lower limit set by the Paris Agreement. That target refers to temperature increases over 20 years, but breaching it for one year shows efforts to slow down climate change have been insufficient, the scientists who wrote the new paper said.
The findings shed light on an ongoing debate among researchers. While there is consensus that greenhouse gas emissions have caused the planet to heat up since pre-industrial times, that warming had been steady for decades. But record-breaking temperatures in recent years have led scientists to question whether the pace of temperature gains is accelerating.
Demonstrating that was difficult due to natural fluctuations in temperatures. The researchers filtered out the “noise” to make the “underlying long-term warming signal” more clearly visible, said Grant Foster, a co-author of the study and a U.S.-based statistics expert.
Researchers isolated phenomena including the El Niño weather phase, volcanic eruptions and solar irradiance. When looking at temperature increases without their influence, the authors concluded the evidence is “strong” that the accelerated warming was not due to an unusually hot 2023 and 2024, but that since 2015 global temperatures departed from their previous, slower path of warming.
The new report adds to a growing body of work that indicates climate change is having a quicker and larger impact on the planet than scientists have understood. A separate paper published this week found that many studies on sea-level increases underestimate how much water along the coast has already risen.
“If the warming rate of the past 10 years continues, it would lead to a long-term exceedance of the 1.5C limit of the Paris Agreement before 2030,” said Stefan Rahmstorf, the lead author of the warming study and a researcher at the Potsdam Institute for Climate Impact Research. “How quickly the Earth continues to warm ultimately depends on how rapidly we reduce global CO2 emissions from fossil fuels to zero.”
Millan writes for Bloomberg.
Science
The neuro disease rat lungworm has reached California
A disease that can cause neurological illness and meningitis in people, rat lungworm, has been found in wild opposums, rats and a zoo animal in San Diego County, indicating its establishment in California for the first time.
Researchers reported their findings in the journal Emerging Infectious Diseases, published by the U.S. Centers for Disease Control and Prevention. The authors, who include veterinarians, researchers and wildlife biologists, urged physicians and other healthcare workers in the region to consider lungworm infection when patients come in with nervous system disorders.
The discovery highlights “a notable expansion of the range of this parasite in North America,” they said.
The CDC website says the risk to the general public of getting this infection is low, but it can be deadly.
If ingested, the worms can cause severe headaches, stiff neck, the sensation of tingling or painful skin, low-grade fever, nausea, vomiting, coma and sometimes death. People who eat freshwater crab, prawns, frogs, snails and slugs are at greatest risk. However, people can also get the disease by eating un-rinsed produce that’s been slimed by a snail or slug, or eating a slug or snail that was chopped up in produce. The worms need moisture, however; if the produce is dry, the worms will die.
Domestic animals, including dogs and cats, are also at risk.
Officials with the California Department of Public Health were not ready to call the disease endemic, or established, in the state.
“Additional surveillance and testing will be necessary to determine whether the detections of rat lungworm in the animals evaluated in San Diego County represent an isolated introduction of the parasite or ongoing local transmission,” spokeswoman Elizabeth Manzo wrote in a statement to The Times.
The department said it is not aware of rat lungworm outside San Diego County, and has seen no human cases.
“However, the San Diego study affirms that the parasite can be introduced to California through movement of infected animals from endemic areas,” the statement said. “Because some species of snails and slugs present in California are capable of serving as hosts for rat lungworm, and the presence of the parasite in other parts of the state is unknown, it is advised to take certain food safety precautions. Persons should not consume any raw or undercooked wild snails or slugs, and should thoroughly wash all produce before consuming.”
The worms that cause the disease, Angiostrongylus cantonensis, are native to Southeast Asia. They’ve been found in the U.S. since the 1960s — including in isolated human and zoo animal cases in California — and are established in Hawaii as well as in much of the southeastern U.S.
It is believed they came overseas via rats on boats.
The worms favored environment is the moist, warm bed of a rat’s lung. When a rat is infected, the worms cause respiratory distress, priming the rodent to cough. Worm-filled sputum is then ejected into the rat’s mouth, and swallowed. The rat then poops the worms out, and animals such as slugs and snails eat the poop. When a rat eats an infected invertebrate, the cycle begins again.
Occasionally, another animal, such as a raccoon or dog, or a person, will accidentally eat an infected animal, or the slime of one, and contract the disease.
The discovery of the worm in San Diego County rodents and opossums was made by staff at the San Diego Zoo and a local wildlife rehabilitation center, Project Wildlife, which is run by the San Diego Humane Society.
In December 2024, a 7-year-old male parma wallaby, born and raised at the zoo, began showing concerning neurological behaviors: incessant head shaking, blindness, a lack of muscle coordination and paralysis in his hind legs. He was euthanized after 11 days in the zoo infirmary.
When zoo staff examined the body, they found six rat lungworms in the marsupial’s brain, along with a lot of damage.
Because the diagnosis was so unusual, zoo staff examined the bodies of 64 free-ranging roof rats that had either been euthanized in the course of regular pest control or found dead on the property. Two, a little more than 3%, had lungworms. Their feces had them too: “numerous live … larvae with coiled posterior ends.” The larvae, roughly 300 in each poop sample, were each about the size of a grain of sand.
Officials at the San Diego Zoo did not respond to requests for comment.
Curiously, at the same time the zoo investigation was underway, staff from Project Wildlife had been dealing with sick opossums brought to them from around the county. Tests of 10 dead animals showed seven carried the lungworms.
Many people and animals remain asymptomatic when they’re infected. Symptoms typically appear within hours or days after ingestion and can last up to eight weeks. The worms will eventually die.
Because the disease has so many varied symptoms, health officials say it can go undiagnosed and untreated. Health officials from Hawaii, where the disease is endemic, say if lungworms are suspected, it’s best to be treated as soon as possible — even before lab results come back.
The CDC too notes that treatment works best when the disease is caught early, and can consist of high doses of corticosteroids, lumbar punctures for symptomatic relief of headaches, and antiparasitic medications, such as albendazole.
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