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The United States may need to endure social distancing measures to fight the coronavirus outbreak until 2022, according to researchers at the Harvard School of Public Health.

The study comes as more than 2,200 people died in the United States from the outbreak on Tuesday, a record, according to a Reuters tally, even as the country debates how to reopen its economy.

The overall death toll in the U.S. from the virus stood at more than 28,300 as of Tuesday.

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"Intermittent distancing may be required into 2022 unless critical care capacity is increased substantially or a treatment or vaccine becomes available," the Harvard researchers said in findings published Tuesday in the journal Science.

Journalists practice social distancing during a news conference with New York Gov. Andrew Cuomo at the Jacob Javits Center on March 24, 2020, in New York. John Minchillo / AP file

Giving examples of South Korea and Singapore, the researchers wrote that effective distancing could reduce the strain on health care systems and enable contact tracing and quarantine to be feasible.

Dr. Rosemary Guerguerian, NBC News' medical fellow, said that as with most mathematical models, the researchers' predictions are based on assumptions we don't yet know about the virus.

The study acknowledged that prolonged distancing would most likely have profoundly negative economic, social and educational consequences.

The study added that even in the case of "apparent elimination," SARS-CoV-2 surveillance should still be maintained, as a resurgence in contagion may be possible as late as 2024. According to the findings, it is likely that COVID-19 could re-emerge every winter.

The World Health Organization has warned that infections had "certainly" not yet peaked. Nearly 2 million people globally have been infected and more than 124,000 have died in the most serious pandemic in a century.

The epicenter has shifted from China, where the virus emerged in December, to the United States, which has now recorded the most deaths.