The Morning Journal (Lorain, OH)
Racing for a remedy, unraveling coronavirus
Unraveling the deadly new coronavirus
Months after the first patients battled an infection never seen before, science reaches unsettling crossroads.
NEW YORK » What is this enemy?
Seven months after the first patients were hospitalized in China battling an infection doctors had never seen before, the world’s scientists and citizens have reached an unsettling crossroads.
Countless hours of treatment and research, trial and error now make it possible to take much closer measure of the new coronavirus and the lethal disease it has unleashed. But to take advantage of that intelligence, we must confront our persistent vulnerability: The virus leaves no choice.
“It’s like we’re in a battle with something that we can’t see, that we don’t know, and we don’t know where it’s coming from,” said Vivian Castro, a nurse supervisor at St. Joseph’s Medical Center in Yonkers, just north of New York City, which struggled with its caseload this spring.
Castro had treated scores of infected patients before she, too, was hospitalized for the virus in April, then spent two weeks in home quarantine. As soon as she returned to the emergency room for her first shift, she rushed to comfort yet another casualty — a man swallowing the few words he could muster between gasps for air.
“It just came back, that fear,” she said. “I just wanted to tell him not to give up.”
The coronavirus is invisible, but seemingly everywhere. It requires close contact to spread, but it has reached around the globe faster than any pandemic in history.
COVID-19 was not even on the world’s radar in November. But it has caused economic upheaval echoing the Great Depression, while claiming more than 580,000 lives. In the U.S. alone, the virus has already killed more Americans than died fighting in World War I.
Even those figures don’t capture the pandemic’s full sweep. Nine of every 10 students worldwide shut out of their schools at one point. More than 7 million flights grounded. Countless moments of celebration and sorrow — weddings and graduations, baby showers and funerals — put off, reconfigured or abandoned because of worries about safety.
In short, the coronavirus has rescripted nearly every moment of daily life. And fighting it — whether by searching for a vaccine or seeking to protect family — takes knowing the enemy. It’s the essential first step in what could be an extended quest for some version of normalcy.
“There’s light at the end of the tunnel, but it’s a very, very long tunnel,” said Dr. Irwin Redlener, director of the National Center for Disaster Preparedness at Columbia University. “There’s a lot we don’t know. But I think it’s absolutely certain we’re going to be adapting to a new way of life. That’s the reality.”
The new coronavirus is roughly 1,000 times narrower than a human hair. But scrutinized through an electron scope, it is clear this enemy is well-armed.
Coronaviruses, including the newest one, are named for the spikes that cover their outer surface like a crown, or corona in Latin. Using those club-shaped spikes, the virus latches on to the outer wall of a human cell, invades it and replicates, creating viruses to hijack more cells.
Find a way to block or bind the spikes and you can stop the virus.
Once inside a human cell, the virus’ RNA, or genetic code, commandeers its machinery, providing instructions to make thousands of virus copies.
But the coronavirus has a weakness: an outer membrane that can be destroyed by ordinary soap. That neutralizes the virus, which is why health experts emphasize the need to wash hands.
Like organisms, viruses evolve, searching for traits that will ensure survival, said Charles Marshall, a professor of paleontology at the University of California and self-described “deep time evolutionary biologist.”
“Coronaviruses fit into the standard evolutionary paradigm extremely well, which is if you’ve had some innovation, you get into some new environment ... you get into a human and you do well, you’re going to proliferate,” Marshall said.
There are hundreds of coronaviruses, but just seven known to infect people. Four are responsible for some common colds. But in 2002, a virus called SARS, for severe acute respiratory syndrome, spread from China to sicken about 8,000 people worldwide, killing more than 700. Another coronavirus called Middle Eastern respiratory syndrome, or MERS — identified in 2012 — spread to humans through camels.
Novel coronavirus origin
The new coronavirus, though, has captivated scientists’ attention unlike any in decades.
When researcher Thomas Friedrich logged on to his computer at the University of Wisconsin-Madison after a meeting in January, he found colleagues had been frantically posting messages to one another about the new virus.
“People were getting increasingly excited and beginning to brainstorm ideas,” said Friedrich, who has spent years studying other infectious diseases.
Now much of Friedrich’s lab is focused on the coronavirus, studying its spread in Wisconsin, and collaborating with scientists around the world examining the disease’s behavior in monkeys.
Even early on it was clear this virus posed a major threat, he said. Human immune systems had never encountered it. And unlike Zika, whose spread can be controlled by targeting mosquitoes, or AIDS, which most often requires sexual contact, the new virus is readily transmitted through droplets in the air.
“It had all the hallmarks, to me, of a potential pandemic,” Friedrich said. “Basically, everyone in the world is susceptible.”
The new virus has breached borders and claimed victims with stealth and speed that make it difficult to track.
Scientists are fairly certain the disease originated in bats, which harbor many coronaviruses. To get to humans, it may have been passed through another animal, possibly consumed for meat. By late January, when Chinese authorities walled off the city of Wuhan, where the disease was first diagnosed, it was too late to stop the spread.
Spanish flu of 1918
The most severe pandemic in recent history, the “Spanish flu” of 1918, was spread by infected soldiers dispatched to fight World War I. But aboard ships, it took weeks for the troops and the disease to cross oceans.
Now, with more than 100,000 commercial flights a day ferrying tourists, business travelers and students around the globe, the new virus spread rapidly and virtually invisibly, said medical historian Mark Honigsbaum, author of “The Pandemic Century: One Hundred Years of Panic, Hysteria and Hubris.”
“By the time we woke up to the outbreak in Italy, it had been there for weeks if not months,” he said.
Soon after the first case in Wuhan, Chinese tourists with the virus traveled to France. But doctors there reported recently that a fishmonger contracted the disease even earlier than that, from an unknown source. On January 21, the first confirmed U.S. case was reported in Washington state, in a man who had traveled to Asia.
“It’s one person coming in from China and we have it under control. It’s going to be just fine,” President Donald Trump said at the time. Ten days later, he blocked entry tomosttravelersfromChina.
But genetic analysis of samples taken from New York patients showed most of the virus present arrived from Europe instead, and took root in February — well before anyone thought about quarantining after a trip to Madrid, London or Paris.
Since February, when Dr. Daniel Griffin began treating patients suspected of having COVID-19, he’s cared for more than 1,000 people with the disease, first noted for attacking the lungs. But the infection certainly does not stop there.
“I am actually shocked,” said Griffin, a specialist in infectious diseases at New York’s Columbia University Medical Center. “This virus seems to leave nothing untouched.”
Scientists are getting a handle on the many ways the disease affects the body, but it’s a scramble.
The lungs are, indeed, ground zero. Many patients find themselves gasping for breath, unable to say more than a word or two.
Even after five days in the hospital, Vivian Castro, the nurse who became infected, said she returned home struggling for air.
“I climbed two flights of stairs to my room and I felt like I was going to die,” she said.
The reason why becomes clear in autopsies of those who have died, some with lungs that weigh far more than usual. Under a microscope, evidence of the virus’ destruction is even more striking.
When Dr. Sanjay Mukhopadhyay examined autopsy samples from a 77-year-old Oklahoma man, he noted changes to the microscopic sacs in the patient’s lungs. In a healthy lung, oxygen passes through the thin walls of those sacs into the bloodstream. But in the Oklahoma patient, the virus had turned the sac walls so thick with debris that oxygen was blocked.
The thickened walls “were everywhere,” preventing the lungs from sustaining the rest of the body, said Mukhopadhyay, of Ohio’s Cleveland Clinic.
Autopsies reveal “what the virus is actually doing” inside patient’s bodies, said Dr. Desiree Marshall, a pathologist at the University of Washington who recently examined the heart of a Seattle man who died from disease.
“Each autopsy has the chance to tell us something new,” she said. And those insights from the bodies of the dead could lead to more effective treatment of the living.
Fresh questions
The coronavirus, though, keeps raising fresh questions. It left the hearts of two men in their 40s, recently treated by Griffin, flaccid and unable to pump enough blood. Some younger people have arrived in emergency rooms suffering strokes caused by blood clotting, another calling card.
Kidneys and livers fail in some patients and blood clots put limbs at risk of amputation. Some patients hallucinate or have trouble maintaining balance. Some get a treatable paralysis in arms or legs. Many have diarrhea, but often don’t mention it until Griffin asks.
Their explanation? “That’s the least of my problems when I can’t breathe.”
Initially, doctors often put patients on ventilators if their blood oxygen levels dropped. But death rates were so high they now try other strategies first, like turning patients on their stomachs, which can help them breathe. The truth is that hospital workers are learning as they go, sometimes painfully.
“Every patient that I see, I think that could’ve been me,” said Dr. Stuart Moser, a cardiologist hospitalized in New York in March after he was infected. He recalls fearing that he might be put on a ventilator and wondering if he’d ever see his family again. Now, back at work, he said much of what he and his colleagues have learned about the virus’ myriad effects enables them only to treat patients’ symptoms.