Long-term infection is very rare. Most people who have a mild but symptomatic case of Covid will feel better within weeks with no need for treatment, according to the NHS. In more severe cases, recovery can take six weeks or more and there can be risk of damage to the heart, lungs or kidneys.
Article source: https://www.huffingtonpost.co.uk/entry/vulnerable-covid-patients-testing-positive-for-months_uk_62626b2fe4b0d077485e6f1e