Health
Parvovirus or ‘slapped cheek disease’ is on the rise, CDC warns: Here’s what to know
A respiratory disease known as parvovirus B19 is on the rise in the U.S. among all age groups, according to a recent advisory from the U.S. Centers for Disease Control and Prevention (CDC).
The CDC issued the health alert on Aug. 13 after European public health authorities reported “unusually” high numbers of cases in 14 countries during the first quarter of 2024, the advisory said.
The virus typically causes a blotchy rash on the cheeks that appears as if someone has slapped them — hence its nickname, “slapped cheek disease.”
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“Parvovirus can be a very mild infection in many people, but if you are pregnant or are immunocompromised in any way, you are at a much greater risk of serious illness,” Dr. Aaron Glatt, chief of infectious diseases at Mount Sinai South Nassau Hospital on Long Island, New York, told Fox News Digital.
What is parvovirus B19?
Parvovirus B19 is a virus that can be easily spread by respiratory droplets in the air after an infected person coughs or sneezes, according to the CDC.
A respiratory disease known as parvovirus B19 is on the rise in the U.S. among all age groups, according to a recent advisory from the U.S. Centers for Disease Control and Prevention (CDC). (iStock)
Children are often infected at school and spread it to other kids through close personal contact, then later to adults when they come home, experts say.
Approximately 50% of people who were not previously infected contract the virus from an infected family member — while 20% to 50% of susceptible students and staff become infected during school outbreaks, the advisory notes.
“The virus is highly contagious and can spread asymptomatically,” Dr. Marc Siegel, senior medical analyst for Fox News and clinical professor of medicine at NYU Langone Medical Center, told Fox News Digital.
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Parvovirus B12 is also known as “fifth disease” because it was previously listed fifth on a list of common childhood viral illnesses that cause rashes, according to Mayo Clinic.
(The top three on this list are measles, rubella and scarlet fever.)
Symptoms of the virus
Many people who get infected don’t have symptoms, but some will experience sickness, according to the advisory.
About a week after an exposure, susceptible children may complain of flu-like symptoms, including fever, muscle pain and fatigue, which generally last less than a week.
People are most contagious in this early phase of the illness.
The virus typically causes a blotchy rash on the cheeks that appears as if someone has slapped them — hence the nickname “slapped cheek disease.” (iStock)
Several days after the fever starts, children often develop the hallmark blotchy “slapped cheek” rash — a helpful clue that health care providers use to diagnose the illness.
People are generally not infectious by the time they develop the rash, experts say.
A fine, “lacy” rash may follow on the chest, back, buttocks, or arms and legs that is sometimes itchy, according to the CDC. It usually goes away in about a week to 10 days.
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Adults are less likely to develop the “slapped cheek” rash. Their most common symptoms are a generalized rash on the body and joint pain that affects the hands, feet and knees.
In some cases, adults only experience joint pain, which usually lasts one to three weeks – although it can last for months. It usually resolves without long-term complications.
Antibodies provide immunity
Antibodies from prior infection help prevent recurrence of parvovirus B12, the CDC said.
“Once infected, you have a lifetime immunity,” Siegel noted.
The largest increase in infections was among children ages 5 to 9.
Most adults in the United States are immune — with 50% having detectable antibody levels by age 20, and more than 70% acquiring them by age 40, per the advisory.
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The share of people who have had a recent infection dropped below 3% between 2022 and 2024, but increased to 10% in June of this year.
The largest increase in infections was among children ages 5 to 9, going from 15% to 40% in that time frame, the health alert noted.
People who work in settings with close contact with children, such as schools and day cares, are at a greater risk of infection.
High-risk populations
Most healthy adults and children only have a mild illness, but people with weakened immune systems, pregnant women and those with chronic blood disorders can develop serious health complications from this virus, according to the CDC.
“Anyone with those conditions should be very quick to seek out medical attention to help address potential complications,” Glatt noted.
Pregnant women who are susceptible to the virus may spread the illness to their babies, the CDC warned. (iStock)
Pregnant women who are susceptible to the virus may spread the illness to their babies, the CDC warned.
“Unfortunately, there is an increased risk of miscarriage if you get parvovirus during pregnancy,” Glatt said.
Parvovirus infection may lead to adverse outcomes — such as severe anemia in the fetus and miscarriage — in 5% to 10% of cases during pregnancy, with the highest risk at between 9 and 20 weeks of fetal gestation, per the advisory.
While parvovirus B19 can affect humans of all ages, only two out of 10 individuals will have physical symptoms. (iStock)
“There is an increased risk of complications in patients with significant immunocompromising conditions, such as those who have leukemia, have received an organ transplant or have an HIV infection,” Glatt added.
Since most adults are immune to the virus, however, many pregnant women are protected from the virus, the CDC noted.
Treatment is mainly ‘supportive care’
Infected pregnant women primarily receive supportive care, which means treating the underlying symptoms and monitoring for severe fetal anemia, according to the advisory.
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People with weakened immune systems or those with chronic blood disorders can sometimes develop bone marrow failure as a result of the virus, the advisory added.
In that case, treatment often includes blood cell transfusions and intravenous immunoglobulin (IVIG).
People are generally not infectious by the time they develop the rash, experts say. (iStock)
(IVIG is a collection of antibodies that strengthens the immune system, according to Mayo Clinic’s website.)
There is currently no vaccine to prevent parvovirus B19, and most people infected with the virus will recover without any long-term complications.
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“While there is no specific treatment for parvovirus infection, recognizing the complications and addressing them early may be of benefit,” Glatt added.
Hand-washing can also help to prevent transmission, according to Siegel.
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After a season of bingeing and drinking, your body may feel like it needs a break from the party.
Dry January — a modern trend that challenges people to abstain from drinking for the first month of the year — has become a popular way to “detox” from the holidays and start the new year on a healthy note.
Research has linked alcohol to a variety of health conditions, ranging from hangovers to higher cancer risk.
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In a recent podcast episode of “The Dr. Mark Hyman Show,” Dr. Mark Hyman, chief medical officer of Function Health, shared how 30 days of not drinking alcohol can transform health.
Hyman, who is based in Massachusetts, called Dry January a “powerful way to see in real time how alcohol affects nearly every system of your body and how quickly those systems can recover.”
Dry January has become a popular way to “detox” from the holidays and start the new year on a healthy note. (iStock)
Alcohol’s toll on the brain and body
Hyman acknowledged that most people drink to feel happier and more comfortable in social situations. This effect is caused by the main ingredient in alcohol, called ethanol, which can also have toxic effects.
Instead of stimulating the brain, alcohol slows it down and loosens inhibitions. “You feel more relaxed, more social, more confident, maybe you feel a little euphoric,” Hyman said.
Alcohol’s effect on the brain can also lead to poorer decisions and slower reflexes, the doctor cautioned.
Drinking alcohol can cause cognitive decline and brain fog, experts warn. (iStock)
Drinking also impacts the prefrontal cortex of the brain, which Hyman described as “the adult in the room,” responsible for judgment, planning and restraint. “It goes offline early in drinking, which explains why people feel freer or act impulsively when they drink,” he said.
Even moderate drinking can cause metabolic stress, inflammation, impaired detoxification and hormonal shifts, Hyman said, which can impact nearly every organ system in the body.
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Alcohol consumption has also been linked to an increased risk of cancer, metabolic dysfunction, gut microbiome disturbances and mitochondrial toxins.
It can also prevent the body from falling into REM sleep, which is the deep rest recovery period when the immune system cleans out the day’s toxins, according to Hyman.
Alcohol can impact deep rest and mental health, according to experts. (iStock)
Memory loss, cognitive decline, anxiety, sleep disruption, dementia and cardiovascular disease are all known risks of long-term alcohol use, as well as liver complications like fatty liver disease.
“Bottom line, alcohol taxes every major system in your body, especially your liver, your brain, your gut, your hormones,” Hyman said.
The effects of 30 days with no alcohol
The first week after your last drink, the body begins to detoxify and reset, according to Hyman. Blood sugar and cortisol stress hormones level out, and the liver begins to process a “backlog of toxins.” The body also re-hydrates and re-energizes.
The first 30 days with no alcohol allows the body to balance itself out. (iStock)
The second week, the gut and brain will begin to re-balance, as hormones like serotonin and dopamine stabilize, gut inflammation drops and the microbiome begins to heal. Cravings for sugar and alcohol will wane and mental clarity returns, the doctor said.
Week three is marked by further decreases in inflammation, fatty liver and blood pressure. This can be noticeable in the skin, as puffiness and redness are reduced. Mood also begins to stabilize, with lower anxiety levels.
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In week four, the body experiences additional metabolic and immune benefits, Hyman shared, including more insulin sensitivity, which makes it easier to lose weight.
“You have a stronger immune response. You’re not getting sick as much. You have better deep sleep, balanced hormones, especially cortisol and testosterone,” he said. “And you see a big change in energy, confidence and focus.”
Abstaining from alcohol can help restore energy, according to experts. (iStock)
Dr. Pinchieh Chiang, a clinician at Circle Medical in San Francisco, said that Dry January isn’t a “detox,” but rather provides “feedback” from the body.
“It gives the body time to show people how it feels without alcohol. For many, that insight alone changes their relationship with drinking,” she said. “The biggest surprise isn’t what people give up, it’s how much better they feel.”
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The doctor confirmed that the first few days of not drinking may feel harder than expected, sometimes causing restlessness, cravings or disrupted sleep, but Dry January can ultimately change drinking habits for the remainder of the year.
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After a full year without alcohol, Chiang noted that health improvements are more profound. “We see sustained improvements in blood pressure, liver function and inflammation,” she said. “Those changes directly affect long-term heart disease and stroke risk.”
The risks of ‘all or nothing’
Some experts warn that adopting the Dry January trend could strengthen the urge to drink more in the other months, noting that some drinkers may find more success by slowly consuming fewer drinks per week.
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Thomas Stopka, Ph.D., an epidemiologist and professor in the public health and community medicine department at Tufts University School of Medicine in Massachusetts, shared in a Futurity report that for some people, “damp January” may be more suitable.
One expert warned that not all drinkers should quit “cold turkey,” as it could lead to severe withdrawals. (iStock)
“Dry January is well-intentioned, and it may work really well for the people who can stick to it, maybe even beyond January,” he said. “Other people may be more inclined to cut down on alcohol consumption rather than quit drinking completely for the month.”
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Stopka noted that successful harm-reduction approaches “aim to be judgment free.”
“Substance use disorder is a disease,” he said. “It takes time to treat the disease and to stay connected to the continuum of care — from prevention to treatment initiation to sustained therapy, whether through medication, self-help, or individual therapy or group support.”
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Those struggling with signs of alcohol use disorder should consult a medical professional for personalized guidance.
Fox News Digital reached out to several alcohol industry associations requesting comment.
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