In March 2020, America's emergency departments confronted a pathogen they did not understand, with equipment they did not have, following protocols that changed daily. This is the definitive account of what happened inside the ER during the worst public health crisis in a century — and what it permanently changed about emergency medicine.
On March 11, 2020, the World Health Organization declared COVID-19 a pandemic. By March 13, emergency departments in New York City, Seattle, and New Orleans were already overwhelmed. By March 20, physicians across the country were making triage decisions that would have been unthinkable a month earlier. By April 1, more than 100 American healthcare workers had died from COVID-19. Emergency medicine would never be the same.
New York City became the first American epicenter of the pandemic, and its emergency departments bore the initial brunt. Elmhurst Hospital in Queens — a 545-bed public hospital serving one of the most densely populated and economically vulnerable communities in the country — became the national symbol of the crisis when a physician filmed refrigerated trucks outside the hospital being used as temporary morgues. The footage, broadcast worldwide, made visceral what statistics could not: the American healthcare system was not prepared.
At Elmhurst and hospitals across the city, emergency departments that had been designed for a maximum census of 60 to 80 patients were managing 200 or more simultaneously. Hallways, waiting rooms, and conference rooms were converted into treatment areas. Physicians and nurses worked 12- and 16-hour shifts in N95 respirators and face shields — when they had them — and improvised with surgical masks and homemade face coverings when they did not.
The clinical picture was unlike anything in the emergency medicine literature. Patients arrived with oxygen saturations in the 70s — levels that would normally indicate imminent respiratory failure — but were alert, conversational, and not in obvious distress. Emergency physicians coined the term "happy hypoxia" or "silent hypoxemia" to describe this paradoxical presentation, which defied the standard clinical heuristics for respiratory failure and led to delayed intubation in some cases and premature intubation in others.
The personal protective equipment shortage of March and April 2020 was not a surprise to those who had been paying attention. The Strategic National Stockpile, maintained by the federal government for exactly this kind of emergency, held approximately 12 million N95 respirators — enough for roughly one day of national healthcare demand during a pandemic. The stockpile had been depleted during the 2009 H1N1 pandemic and never fully replenished.
Emergency physicians and nurses reported being told to reuse N95 respirators for days or weeks — a practice that violated the manufacturer's instructions and the CDC's own pre-pandemic guidance. Some were given surgical masks and told they provided equivalent protection. Others were given no masks at all and told to use their own judgment. Physicians who publicly complained about PPE shortages reported being threatened with termination by hospital administrators.
The consequences were predictable. By April 2020, the CDC reported that at least 9,282 healthcare workers had been infected with COVID-19 in the United States. The true number was certainly higher, as testing was severely limited and many healthcare worker infections went unconfirmed. Emergency medicine physicians and nurses, who had the highest exposure risk of any healthcare specialty, were disproportionately represented among those infected and those who died.
Healthcare Worker Deaths — Spring 2020
By May 1, 2020, at least 1,200 U.S. healthcare workers had died from COVID-19, according to a Kaiser Health News and Guardian investigation. Emergency medicine physicians and nurses accounted for a disproportionate share. Many had worked without adequate PPE. Several had publicly raised alarms about shortages before becoming ill.
As the first wave peaked in April 2020, hospitals in New York, New Jersey, and Michigan faced a shortage of mechanical ventilators. The federal government's emergency procurement effort — which included invoking the Defense Production Act to compel General Motors to manufacture ventilators — came too late for the first wave. Hospitals were forced to develop crisis standards of care that included ventilator allocation protocols: formal frameworks for deciding which patients would receive mechanical ventilation when there were not enough ventilators for all who needed them.
These protocols, developed hastily by ethics committees and emergency medicine departments, represented a form of triage that American medicine had not practiced since World War II. They were based on Sequential Organ Failure Assessment scores, age, and likelihood of survival — criteria that, when applied in practice, meant that some patients who might have survived with ventilator support did not receive it. Emergency physicians who implemented these protocols described the experience as the most morally distressing of their careers.
The ventilator crisis also exposed a clinical assumption that turned out to be wrong. Early in the pandemic, the standard approach to COVID-19 respiratory failure was early intubation and mechanical ventilation — the same approach used for other forms of acute respiratory distress syndrome. By April 2020, emergency physicians and intensivists were reporting that many COVID-19 patients could be managed with high-flow nasal cannula oxygen and prone positioning without intubation, and that early intubation may have been harmful in some cases. The clinical protocols were revised in real time, with physicians learning from each other through social media, preprint servers, and emergency teleconferences rather than through the traditional peer-reviewed literature.
One of the most consequential and least-discussed consequences of the COVID-19 pandemic was the dramatic decline in emergency department visits for non-COVID conditions. Between March and May 2020, ER visits for heart attack, stroke, and appendicitis fell by 40 to 60 percent nationally. Patients who were having strokes and heart attacks were not going to the emergency department — they were staying home, afraid of contracting COVID-19 in the hospital.
The consequences were measured in excess deaths. A study published in JAMA Cardiology in July 2020 found that out-of-hospital cardiac arrest rates in New York City increased by 800 percent during the peak of the first wave, compared to the same period in 2019. Many of these deaths were attributable not to COVID-19 directly, but to patients avoiding emergency care for treatable conditions. Emergency physicians called it "the pandemic within the pandemic" — a wave of preventable deaths caused by fear of the hospital itself.
The psychological impact of the pandemic on emergency medicine providers was severe and lasting. A survey of emergency physicians conducted by ACEP in June 2020 found that 57% reported symptoms consistent with burnout, 45% reported symptoms of anxiety, and 38% reported symptoms of depression — all significantly higher than pre-pandemic baselines. Forty-two percent reported that they had considered leaving emergency medicine as a result of the pandemic.
Several emergency physicians died by suicide during the first wave of the pandemic. Dr. Lorna Breen, medical director of the emergency department at NewYork-Presbyterian Allen Hospital, died by suicide on April 26, 2020, after treating COVID-19 patients and contracting the disease herself. Her death prompted national attention to the mental health crisis among healthcare workers and ultimately led to the passage of the Dr. Lorna Breen Health Care Provider Protection Act in 2022, which authorized $35 million in federal funding for healthcare worker mental health programs.
The burnout and moral injury that began during the pandemic did not resolve when the acute crisis passed. The ACEP 2026 Workforce Report documents that emergency physician burnout rates remain at 63% — higher than pre-pandemic levels — and that the pandemic is cited by 71% of physicians who left emergency medicine between 2020 and 2025 as a contributing factor in their decision.
The COVID-19 pandemic accelerated changes in emergency medicine that had been building for years and created new ones that will define the specialty for decades. Telehealth, which had been a marginal component of emergency care before the pandemic, was rapidly deployed for triage, follow-up, and low-acuity care during the crisis and has remained a permanent part of the emergency care landscape. Point-of-care ultrasound, already growing in importance, became essential for rapid assessment of COVID-19 pneumonia and has since been formalized as a board certification requirement.
The pandemic also exposed the fragility of the emergency medicine workforce pipeline in ways that have not been fully addressed. The combination of pandemic-related burnout, early retirements, and a residency training pipeline that was disrupted for two years has contributed to the physician shortage that ACEP now projects will reach 8,000 by 2030. The travel nurse rate spike of 2021 and 2022 — which cost hospitals billions of dollars and ultimately contributed to the financial distress of PE-backed staffing firms including Envision Healthcare — was a direct consequence of the pandemic-era nursing exodus.
Perhaps most importantly, the pandemic demonstrated that the American emergency care system — the safety net of last resort for 145 million annual visits — is not resilient enough to withstand a major public health crisis. The PPE stockpile failures, the ventilator shortages, the absence of surge capacity, and the inadequacy of federal coordination were not failures of individual hospitals or physicians. They were systemic failures that had been documented in pandemic preparedness exercises for years and never adequately addressed. Whether the lessons of 2020 will produce the systemic changes needed to prevent a repeat remains, six years later, an open question.
40–60%
Drop in non-COVID ER visits, Spring 2020
800%
Increase in out-of-hospital cardiac arrests, NYC April 2020
1,200+
U.S. healthcare worker deaths by May 1, 2020
57%
Emergency physicians with burnout symptoms, June 2020
$35M
Federal funding from Dr. Lorna Breen Act (2022)
63%
Emergency physician burnout rate, 2026 (still elevated)