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After spending much of the past year tending to elderly patients, doctors are seeing a clear demographic shift: young and middle-aged adults make up a growing share of the patients in COVID-19 hospital wards. 

It's both a sign of the country's success in protecting the elderly through vaccination and an urgent reminder that younger generations will pay a heavy price if the outbreak is allowed to simmer in communities across the country.

"We're now seeing people in their 30s, 40s and 50s — young people who are really sick," says 

, an infectious disease physician and chair of the Chicago Medical Society's COVID-19 task force. "Most of them make it, but some do not. ... I just lost a 32-year-old with two children, so it's heartbreaking." 

 for most hospitalized COVID-19 patients in the country — about 35 percent of all hospital admissions. Those age 50 to 64 account for the second-highest number of hospitalizations, or about 31 percent. Meanwhile, hospitalizations among adults over 65 have fallen significantly.

 is now fully vaccinated, but the vast majority are people older than 65 — a group that was prioritized in the initial phase of the vaccine rollout.

 nationwide, some regions have contended with a resurgence of the virus in recent months — what some have called a "

" — propelled by the B.1.1.7 variant, first identified in the U.K., which is estimated to be somewhere between 40 percent and 70 percent more contagious. 

As many states ditch pandemic precautions, this more virulent strain still has ample room to spread among the younger population, which remains broadly susceptible to the disease. 

The emergence of more dangerous strains of the virus in the U.S. — the B.1.1.7, as well as other variants first discovered in South Africa and Brazil — has made the vaccination effort all the more urgent. 

"We are in a whole different ballgame," says 

, an epidemiologist at the University of Washington.

Rising infections among young adults create a "reservoir of disease" that eventually "spills over into the rest of society" — one that has 

 — and portends a broader surge in cases, she says. 

Fortunately, the chance of dying from COVID-19 remains very small for people under the age of 50, but this age group can become seriously ill or suffer from long-term symptoms after the initial infection. People with underlying conditions such as obesity and heart disease are also more likely to become seriously ill. 

"B.1.1.7 doesn't discriminate by age, and when it comes to young people, our messaging on this is still too soft," says Malmgren. 

Hospitals filled with younger, sicker people

Across the country, the influx of younger patients with COVID-19 has startled clinicians who describe hospital beds filled with patients, many of whom appear sicker than what was seen during previous waves of the pandemic.   

"A lot of them are requiring ICU care," says

, head of infection prevention and control at UCHealth, one of Colorado's largest hospital systems, as compared with earlier in the pandemic.

The median age of COVID-19 patients at UCHealth hospitals has dropped by more than a decade in the past few weeks, from 59 down to about 48 years old, says Barron. 

"I think we will continue to see that, especially if there's not a lot of vaccine uptake in these groups," she says. 

While most hospitals are far from the onslaught of illness seen during the winter, the 

 underscores the potential fallout of loosening restrictions when a large share of adults are not yet vaccinated. 

There's strong evidence that all three vaccines being used in the U.S. provide good protection against the U.K. variant. 

 that the B.1.1.7 variant doesn't lead to more severe illness, which was previously thought. However, patients infected with the variant appear to be more likely to have more of the virus in their bodies than those with the previously dominant strain, which may help explain why it spreads more easily.

"We think that this may be causing more of these hospitalizations in younger people," says 

 at the University of Alabama-Birmingham hospital.

Lee's hospital also has observed an uptick in younger patients. Like in other Southern states, Alabama has a 

But even in Washington state, where much of the population is opting to get the vaccine, hospitalizations 

 since early March, especially among young people. 

In the Seattle area, more people in their 20s are now being hospitalized for COVID-19 than people in their 70s, according to Seattle King County Public Health Chief Health Officer Dr. Jeff Duchin. 

"We don't yet have enough younger adults vaccinated to counteract the increased ease with which the variants spread," said Duchin at a recent press briefing. 

 are fully vaccinated, compared with 27 percent of people in their 30s. That share drops to about 18 percent for 18- to 29-year-olds.

"I'm hopeful that the death curve is not going to rise as fast, but it is putting a strain on the health system

, an emergency physician and president of the Washington State Medical Association. 

Schlicher, also in his late 30s, recalls with horror two of his recent patients — close to his age and previously healthy — who were admitted with new onset heart failure caused by COVID-19. 

"I've seen that up close and that's what scares the hell out of me," he says.

"I understand young people feeling invincible, but what I would just tell them is — don't be afraid of dying, be afraid of heart failure, lung damage and not being able to do the things that you love to do."

Doctors and public health experts hope that the troubling spike in hospitalizations among the younger demographic will only be temporary — one that vaccines will soon counteract. 

It was only a couple weeks ago that all U.S. adults became eligible for a COVID-19 vaccine, although they were available in some states much sooner.

 polls that indicate a sizable portion of teens and adults in their 20s and 30s don't necessarily have plans to get vaccinated. 

"We just need to make it super-easy — not inconvenient in any way," says Malmgren, the Washington epidemiologist. "We have to put our minds to it and think a little differently." 

She recommends more outreach through social media platforms or even at bars and other places where younger people hang out.  Two bars in New Orleans 

 this tactic earlier this month — one even offered a free shot to customers who got vaccinated. 

When Chicago physician Vishnu Chundi talks to the families of his COVID-19 patients, he generally doesn't hear resistance to getting the vaccine so much as a sense of complacency about getting it done quickly.

"You have to be motivated to go to these places, you have to get two vaccines now — it's a process," he says. "If it's available for them, they're going to go pick up coffee somewhere and it's there — yes, they'll get vaccinated." 

Health

COVID-19

Will Stone

Author

With older adults vaccinated, doctors say a growing share of their COVID-19 patients are in their 20s, 30s, 40s and 50s, as more contagious variants circulate among people who are still unvaccinated. 

COVID 'doesn't discriminate by age': Serious cases on the rise in younger adults

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