Health
Anthony Fauci’s West Nile virus diagnosis: What to know about the mosquito-borne disease
Dr. Anthony Fauci, former director of the National Institute of Allergy and Infectious Diseases and former chief medical advisor to the president, was diagnosed with West Nile virus earlier this month, according to a spokesperson for Fauci.
Fauci, 83 — who was the face of the U.S. response to the COVID pandemic in 2020 — is now recovering at home after being hospitalized for six days.
He is expected to make a full recovery, the spokesperson told Fox News.
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What to know about West Nile virus
As of Aug. 20, there were 216 West Nile virus cases in the U.S. across 33 states, per the CDC.
Among those, 142 cases were neuroinvasive (severe).
Since the West Nile virus first entered the U.S. in 1999, it has become the leading cause of mosquito-borne disease in the country, according to the Centers for Disease Control and Prevention (CDC).
Dr. Anthony Fauci, formerly the director of the National Institute of Allergy and Infectious Diseases and the chief medical advisor to the president, was diagnosed with West Nile virus earlier this month, according to a spokesperson for Fauci. (Getty Images)
In most cases, the West Nile virus — a flavivirus in the same family as yellow fever, dengue fever, Japanese encephalitis and the Zika virus — is spread when Culex mosquitoes bite infected birds and then bite people and other animals, per the CDC’s website.
The virus is not transmitted through eating or handling infected animals or birds — nor is it spread through physical contact, coughing or sneezing.
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A vast majority — around 80% — of the people who contract the virus will not experience any symptoms, the CDC states on its website.
In most cases, the West Nile virus — a flavivirus in the same family as yellow fever, dengue fever, Japanese encephalitis and the Zika virus — is spread when Culex mosquitoes bite infected birds and then bite people and other animals, per the CDC’s website. (Drew Angerer/Getty Images, main, E. Jason Wambsgans/Chicago Tribune/Tribune News Service via Getty Images, top right, NIH-NIAID/IMAGE POINT FR/BSIP/Universal Images Group via Getty Images, bottom right.)
“It causes a rash and other symptoms, including swollen lymph nodes, which other viruses in its class do not exhibit,” Dr. Marc Siegel, senior medical analyst for Fox News and clinical professor of medicine at NYU Langone Medical Center, previously told Fox News Digital.
“It only affects the nervous system 1% of the time and is rarely fatal.”
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Around one in five people will develop febrile illness, which is marked by a fever along with body aches, headache, joint pain, diarrhea, rash and/or vomiting.
These symptoms usually go away on their own, but some people may have lingering weakness and fatigue months after infection.
West Nile affects the nervous system 1% of the time and is rarely fatal.
In rare cases — about one in every 150 infected people — the virus can lead to serious conditions affecting the nervous system, such as encephalitis (inflammation of the brain) or meningitis (inflammation of the membranes that surround the brain and spinal cord), the CDC states on its website.
Those who develop serious illness may experience headache, stiff neck, high fever, disorientation, vision loss, muscle weakness, convulsions, tremors, coma or paralysis, which occur when there is viral infection of the central nervous system.
Among people who have this invasive form of the illness, around 10% will die.
It affects the nervous system 1% of the time and is rarely fatal, statistics show.
Around one in five people will develop febrile illness, which is marked by a fever along with body aches, headache, joint pain, diarrhea, rash and/or vomiting. (iStock)
While anyone can potentially develop severe illness, the highest-risk groups include those over 60 years of age, people who have had organ transplants and those with diabetes, cancer, high blood pressure, kidney disease, immune disorders and other certain medical conditions.
“The virus’ effects can be quite serious in the elderly,” Siegel noted.
Diagnosis and treatment
Those who think they might have been infected with WNV should be assessed by a health care provider, the CDC states.
Diagnosis of the infection can be made based on evaluation of symptoms, recent exposure to mosquitoes and testing of blood or spinal fluid.
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Health care providers will typically recommend treating symptoms with over-the-counter pain medications and getting plenty of rest and fluids.
Those who experience severe illness may need to be hospitalized for supportive care.
Preventing the virus
There is currently no vaccine for West Nile virus.
“The virus can be contained through public health measures including more insect repellent with DEET, longer sleeves and less stagnant water in our backyards,” Siegel said.
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Trying to kill adult mosquitoes by spreading too much insecticide can be problematic, the doctor warned.
“Animals, people with asthma and insects that would otherwise kill the mosquitoes are affected.”
When spending time outdoors, it is recommended that people apply insect repellent containing DEET or other EPA-approved ingredients. (iStock)
The most effective means of prevention is to protect against mosquito bites, the CDC confirmed.
The agency’s recommendations include using insect repellent, wearing long-sleeved shirts and pants, and taking steps to control exposure to mosquitoes — particularly at dawn and dusk.
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Eliminating any standing water outdoors can help prevent mosquitoes from breeding.
Fox News’ Michael Dorgan and Danielle Wallace contributed reporting.
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As colorectal cancer (CRC) is now the leading cause of cancer death in adults under 50, a new report reveals some surprising shifts in the incidence of the disease.
Although rates of CRC have been declining among seniors, those 65 and under are facing a rise in diagnoses, according to a report titled Colorectal Cancer Statistics, 2026, from the American Cancer Society.
Adults 65 and younger comprise nearly half (45%) of all new colorectal cancer cases — a significant increase from 27% in 1995, states the report, which was published in CA: A Cancer Journal for Clinicians.
The disease is rising fastest among adults 20 to 49 years old, at a rate of 3% per year.
Colorectal cancer is now the leading cause of cancer death in adults under 50. (iStock)
Among adults 50 and under, 75% of colorectal cancers are diagnosed at an advanced stage. Half of the diagnoses in that age range are made between the ages of 45 and 49. Although that age group is eligible to receive routine screenings, just 37% do so.
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The report also revealed that rectal cancer is on the rise, now accounting for about one-third (32%) of all CRC cases — an increase from 27% in the mid-2000s.
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“After decades of progress, the risk of dying from colorectal cancer is climbing in younger generations of men and women, confirming a real uptick in disease because of something we’re doing or some other exposure,” said Rebecca Siegel, senior scientific director, surveillance research at the American Cancer Society and lead author of the report, in a press release.
Among adults 50 and under, 75% of colorectal cancers are diagnosed at an advanced stage. Half of the diagnoses in that age range are made between the ages of 45 and 49. (iStock)
“We need to redouble research efforts to understand the cause, but also circumvent deaths through earlier detection by educating clinicians and the general public about symptoms and increasing screening in people 45-54 years.”
It is projected that 158,850 new cases of colorectal cancer will be diagnosed this year, and that the disease will cause 55,230 deaths, per the report.
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More than half of CRC cases can be linked to high-risk behaviors, the researchers said. Those include lack of nutrition, high alcohol consumption, smoking, lack of exercise and obesity.
“These findings further underscore that colorectal cancer is worsening among younger generations and highlight the immediate need for eligible adults to begin screening at the recommended age of 45,” said Dr. William Dahut, chief scientific officer at the American Cancer Society.
When the disease is caught at a local (early) stage, the five-year survival rate is 95%. (iStock)
“The report also shines a light on the crucial importance of continued funding for research to help discover new therapies to treat the disease and advance patient care.”
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When the disease is caught at a local (early) stage, the five-year survival rate is 95%, the report stated.
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A new study suggests that middle-aged men may be more vulnerable to faster biological aging, potentially linked to exposure to “forever chemicals.”
The research, published in the journal Frontiers in Aging, examined how perfluoroalkyl and polyfluoroalkyl substances, more commonly known as PFAS, could impact aging at the cellular level.
PFAS are synthetic chemicals commonly used in nonstick cookware, food packaging, water-resistant fabrics and other consumer products, the study noted.
Their chemical structure makes them highly resistant to breaking down, allowing them to accumulate in water, soil and the human body.
Chinese researchers analyzed blood samples from 326 adults enrolled in the U.S. National Health and Nutrition Examination Survey between 1999 and 2000.
A new study suggests that middle-aged men could face accelerated biological aging at the cellular level due to exposure to PFAS. (iStock)
The researchers measured levels of 11 PFAS compounds in participants’ blood and used DNA-based “epigenetic clocks” — tools that analyze chemical changes to DNA to estimate biological age — to determine how quickly their bodies were aging at the cellular level, the study stated.
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Two compounds, perfluorononanoic acid (PFNA) and perfluorooctanesulfonamide (PFOSA), were detected in 95% of participants.
Higher concentrations of those chemicals were associated with faster biological aging in men of certain age groups, but not in women.
“People should not panic.”
The compounds most strongly linked to accelerated aging were not the PFAS chemicals that typically receive the most public attention, the researchers noted.
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“The associations were strongest in adults aged 50 to 64, particularly in men,” Dr. Xiangwei Li, professor at Shanghai Jiao Tong University School of Medicine and the study’s corresponding author, told Fox News Digital.
“While this does not establish that PFAS cause aging, it suggests that these widely present ‘forever chemicals’ may be linked to molecular changes related to long-term health and aging.”
The study found that two of the compounds were detected in 95% of participants, and higher levels were linked to faster biological aging in men ages 50–64. (iStock)
Midlife may represent a more sensitive biological period, when the body becomes more vulnerable to age-related stressors, according to the researchers.
Lifestyle factors, such as smoking, may influence biological aging markers, potentially increasing vulnerability to environmental pollutants.
While Li said “people should not panic,” she does recommend looking for reasonable ways to reduce exposure.
That might mean checking local drinking water reports, using certified water filters designed to reduce PFAS, and limiting the use of stain- or grease-resistant products when alternatives are available.
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Meaningful reductions in PFAS exposure will likely depend on broader regulatory action and environmental cleanup efforts, Li added.
The researchers noted that midlife could be a particularly sensitive stage, when the body is more susceptible to stressors associated with aging. (iStock)
Study limitations
The researchers outlined several important limitations of the research, including that the findings show an association, but do not prove that PFAS directly causes accelerated aging.
“The study is cross-sectional, meaning exposure and aging markers were measured at the same time, so we cannot determine causality,” Li told Fox News Digital.
The study was also relatively small, limited to 326 adults age 50 or older, which means the findings may not apply to younger people or broader populations.
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Researchers measured PFAS levels using data collected between 1999 and 2000, and today’s exposure patterns may differ.
Li added that while PFAS is known to persist in the environment and the body, these results should be validated through larger, more recent studies that follow participants over time.
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