A study has identified four predictive factors of Post Acute Sequelae of COVID-19 (PASC), often called long COVID. These 'PASC factors' can be identified at the initial point of COVID-19 diagnosis ...

Study identifies elevated serologic responses and memory CD8+ T cell clonal expansion as key markers of Long COVID, offering insights into its pathology and potential diagnostic approaches.

Symptoms of COVID-19 persist or recur months after diagnosis for more than a third of all people who get the illness, a new study finds, potentially pushing the number of so-called long COVID ...

This 2-year-long longitudinal study was thereby able to reveal protein biomarkers useful in long-COVID diagnosis and some potential mechanisms by which the condition debilitates survivors.

Blood and urine tests are ineffective for diagnosing long COVID -- a constellation of long-term symptoms such as chronic pain, brain fog, shortness of breath and intense fatigue, a new study shows.

More information: Rick DeVoss et al, Healthcare utilization patterns before and after a long COVID diagnosis: a case-control study, BMC Public Health (2025). DOI: 10.1186/s12889-025-21393-4.

What makes some people with COVID-19 develop the often-debilitating symptoms of long-COVID, with its varying effects like brain fog, weakness and fatigue? A new study led by researchers at Seattle ...

Long Covid continues to evade a clear diagnostic test, researchers reported in a study published Monday in the Annals of Internal Medicine. The findings are part of the National Institute of ...

Long Covid, a complex ... Sixty percent of the patients with the post-Covid diagnosis were female, the study reported, compared with 54 percent of Covid patients overall in the FAIR Health database.

Around two-thirds of the COVID-19 cohort experienced symptoms of long COVID, defined as a symptom lasting longer than 12 weeks beyond initial date of diagnosis. Among those experiencing long COVID ...

Undertaking a study of proteins found in the complement system, an important part of the immune system, of patients with long COVID, researchers have identified a blood protein ‘signature ...