Why some COVID-19 infections last a long time

Dissecting the drivers of persistent SARS-CoV-2 infections

NIH-funded research Icahn School of Medicine at Mount Sinai · NIH-11134627

This project will look for the factors that let COVID-19 keep replicating in people, especially those with weakened immune systems.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionIcahn School of Medicine at Mount Sinai NIH-funded
Lab location1 site (New York, United States)
Project IDNIH-11134627 on NIH RePORTER

What this research studies

From a patient's point of view, the team will use medical records and clinical information from people treated in New York City together with detailed viral genetic data to see why some infections persist. They will combine computer analyses of large datasets with laboratory studies of viral samples and immune responses, including B and T cells. The researchers will focus on people with prolonged positive tests and link changes in the virus to treatments, immune status, and clinical course. Findings are intended to reveal how long infections continue and which interventions may change that outcome.

Who could benefit from this research

Good fit: Ideal candidates are people—particularly those with weakened immune systems—who have had prolonged SARS-CoV-2 infection or repeated positive tests and who can share medical records or samples with the Mount Sinai team.

Not a fit: People who had a single, brief COVID-19 illness that cleared quickly or who cannot provide access to their clinical records or samples are unlikely to benefit directly.

Why it matters

Potential benefit: If successful, this work could help prevent or better treat long-lasting COVID-19 infections and reduce the chances that new viral variants emerge.

How similar studies have performed: Reports have already documented prolonged infections and within-patient viral evolution in immunocompromised people, but applying large clinical record sets together with deep viral genomics to define specific drivers is a newer, more comprehensive approach.

Where this research is happening

New York, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.