Long-Term Outcomes of Multisystem Inflammatory Syndrome in Children up to 4.5 Years After COVID-19
🚨IMPORTANT new study just dropped: MIS-C in kids is NOT a temporary illness!!
🚨It raises cardiovascular disease risk 14×, hypertension 9×, and gut/lung/brain problems for up to 4.5 years later(=LC)
Earlier “kids recover fine” claims are now officially challenged! Study:👇
➡️ A retrospective cohort study from New York’s Montefiore Health System examined 173 children under 21 with MIS-C versus 346 propensity score-matched controls without MIS-C, all following documented COVID-19 infection.
➡️Follow-up extended up to 4.5 years (March 2020–August 2024) using electronic health records, with MIS-C confirmed by ICD-10 code M35.81 plus CDC/WHO criteria.
➡️Results:
1. MIS-C patients faced markedly elevated risks compared to controls:
- Cardiovascular disorders (aHR 13.88, 95% CI 4.69–41.07),
- Hypertension (aHR 8.86),
- Gastrointestinal disorders (aHR 9.48),
- Respiratory disorders (aHR 3.46), and
- Neurological disorders (aHR 2.02),
- Shock and chronic kidney disease (CKD) occurred almost exclusively in the MIS-C group,
2. Kaplan-Meier analysis showed persistent cumulative incidence in the MIS-C cohort ranging from 6.8% (CKD) to 35.2% (respiratory disorders), with risks diverging and accumulating over years rather than resolving,
3. Preexisting hypertension strongly predicted cardiovascular, neurological, respiratory, and gastrointestinal outcomes,
4. Preexisting diabetes increased CKD risk 49-fold,
5. Older age modestly raised risks of shock and CKD.
6. Sensitivity analyses using stricter MIS-C definitions and alternative respiratory coding confirmed the main results.
7. No mention or data on vaccination and/or reinfection impact.
➡️The study directly challenges earlier reports portraying MIS-C as a transient, self-limited condition with minimal long-term sequelae.
‼️So, MIS-C is not a temporary inflammatory storm that children outgrow. It inflicts severe, lasting multisystem damage that multiplies the lifetime risk of serious cardiovascular disease, hypertension, gastrointestinal, respiratory, and neurological disorders by several-fold to more than ten-fold, while introducing rare but devastating conditions like shock and CKD that almost never occur in peers.
‼️Sadly enough risks continue to accumulate years later.
‼️Earlier short-term “excellent recovery” narratives are contradicted by this longer, rigorous evidence.
‼️Affected children now carry a heavy, potentially permanent burden of chronic illness that will require lifelong medical surveillance and coordinated care or face accelerated morbidity and reduced quality of life!
‼️Of course we need further confirmation, but this does fit the ongoing concerns within the LC science community!
😡So much for paediatric minimalizations!
#AvoidSars2 #AvoidReinfections #ProtectChildren
publications.aap.org/pediatr…