If someone is suffering from long COVID, then there is no way to know how long it will take for him/her to recover from the ailment.
US CDC had earlier pointed out that people who contract mild COVID recover from it in 1 to 2 weeks, while for severe COVID patients, symptoms may continue for 6 weeks or more.
However, a Lancet Respiratory Medicine's recent study showed at least half of the people hospitalized due to COVID suffer from one or more symptoms even two years after the infection.