A drug combo for post-COVID heart inflammation just ran a full trial. The primary endpoint didn't move.

Key Findings

Long COVID Hits Multiple Organs — Not Just the Ones Patients Report

• A population-based case-control study compared people with long COVID against controls across multiple organ systems and found structural and functional deficits that extend well beyond the symptoms patients typically describe.
• The multi-system scope of the findings reinforces that long COVID is not a single-organ problem, complicating both diagnosis and treatment design.

Multidisciplinary Long COVID Clinics Reduced Fatigue — Regardless of Which Add-On Was Used

• A cluster-randomized trial across six NHS long COVID clinics tested multi-organ MRI, digital rehabilitation, both, or neither against usual specialist care in 1,152 participants. Fatigue scores improved by about 4.5 points at 12 weeks in all arms — including usual care.
• Neither add-on intervention produced a statistically significant additional benefit over standard multidisciplinary care alone.

About 1 in 5 Kids Who Got COVID Developed Long COVID Symptoms

• A meta-analysis pooling 52 cohort studies and nearly a million pediatric subjects estimated a pooled long COVID rate of 18%, with fatigue, respiratory, and neurological symptoms most common. Females, adolescents, kids with prior comorbidities, and those with severe initial infections were at higher risk.
• Vaccination status was not significantly associated with long COVID risk in children, though the pooled estimate carried wide uncertainty.

Pre-Pandemic and Post-COVID POTS Share Nearly Identical Inflammatory Fingerprints

• Researchers compared plasma immune markers across four groups — pre-pandemic POTS patients, long COVID POTS patients, COVID-recovered controls, and naive controls. Both POTS groups showed significantly elevated levels in 14 of 15 measured markers, including inflammation-related proteins linked to the NLRP3 signaling axis, with no statistically significant difference between the two POTS cohorts.
• IL-18 emerged as the single most important classifier distinguishing POTS from controls in a machine-learning analysis.

Long COVID's Brain Effects Look Similar to ME/CFS on Advanced Imaging

• A study using two advanced MRI diffusion techniques directly compared brain tissue microstructure in people with ME/CFS and long COVID for the first time. Both groups showed microstructural alterations compared to healthy controls, and the pattern of changes overlapped substantially between the two conditions.
• The findings add imaging-level evidence to the clinical observation that ME/CFS and long COVID share symptoms like profound fatigue, cognitive impairment, and post-exertional malaise.

When You Define Comorbidities Changes Your Long COVID Risk Estimate — By a Lot

• Analyzing electronic health records from over 6 million U.S. adults, researchers found that measuring comorbidities before COVID infection (rather than before the long COVID diagnosis) produced risk estimates 23% to 115% higher depending on the condition studied.
• The finding flags a methodological fault line running through much of the existing long COVID epidemiology literature: the exposure window definition is not a minor technical choice.