Symptom Trajectories and Long-Term Sequelae of COVID-19: A Matched Case-Control Study with Population-Based Controls

This study examined the long-term effects of COVID-19 by comparing 201 post-COVID-19 patients with 201 matched controls. It found that while respiratory symptoms declined rapidly and remained low, non-respiratory symptoms such as fatigue, neurocognitive, cardiovascular, and dermatologic issues, including hair loss, persisted, leading to a higher overall symptom burden in post-COVID-19 individuals. Female sex was identified as a significant predictor of higher multisystem symptom burden. The study emphasizes the need for comprehensive follow-up care focusing on multisystem symptoms and suggests that unrecognized infections may still lead to long-term symptoms.