COVID-19 Infection Worsened Preexisting Health Conditions

Researchers found that more than 10 percent of U.S. adults reported exacerbated health issues after contracting the virus.

Updated on Sept. 28, 2026 in COVID-19

COVID-19 Infection Worsened Preexisting Health Conditions

Live Poll

Are you concerned that a COVID-19 infection could worsen your preexisting health conditions in the future?

A study conducted between July 2023 and January 2025 found that 11.8% of participants experienced a worsening of at least one preexisting health condition following a COVID-19 infection. The findings highlight persistent health challenges for U.S. adults who managed chronic conditions before their illness.

Why it matters

The study underscores the necessity of monitoring long-term health outcomes for individuals with underlying conditions who contract the virus. Understanding these shifts in health status is critical for patients and providers navigating ongoing care management.

In a survey of 2,227 U.S. adults, 11.8% reported that COVID-19 worsened preexisting conditions, with respiratory issues being the most cited concern at 32%. Participants were tracked through health questionnaires at three, six, and 12 months post-infection.

The details

Researchers analyzed participants' written descriptions of their symptoms and health questionnaires to identify changes in status. Among those reporting worsened conditions, 20% noted general symptoms like fatigue and headache, 15% cited musculoskeletal problems, and 12% reported increased anxiety or depression. The data reflects the complex, multi-system impact of the virus on individuals already managing established health burdens.

Data collection for the study occurred from July 2023 to January 2025.
Survey results were published on medRxiv in September 2026.

Health Landscape

This research adds to the expanding body of knowledge concerning post-viral health trajectories, extending beyond initial acute infection data. It sits within a larger effort to characterize how infections influence the progression of chronic disease in the U.S. population.

If you are managing a preexisting condition, be alert to shifts in your respiratory health, energy levels, or mood following a COVID-19 infection. These changes are worth discussing with your doctor to determine if they require adjustments to your ongoing care plan.

The takeaway

Ongoing assessment of symptoms is vital for those with underlying conditions following a COVID-19 infection. Maintain a record of new or intensifying health issues to facilitate productive conversations with your primary care provider.