Patients who were initially hospitalized, more than 80% reported at least one symptom that persisted beyond the first month. The symptoms of long-COVID can vary widely, including cough, low-grade fever, fatigue, chest pain, shortness of breath, headaches, cognitive difficulties, muscle pain and weaknesses, gastrointestinal distress, rashes, metabolic disruption, depression, and other mental health conditions. 

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https://zeenews.india.com/health/how-research-on-chronic-illnesses-will-improve-covid-19-treatment-2340882