inclusion criteria: * age above 18 years * laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 * date of first symptoms of sars-cov-2 infection \> 4 weeks and \< 4 months * persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 4 weeks after covid, defined as : * increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 4 weeks after covid and/or * asthenia score (pichot asthenia scale) \> 22 beyond the first 4 weeks after covid, if patient had no asthenia before covid (asthenia score \<8) and/or * weight loss \> 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 4 weeks after covid and/or * bmi (body mass index) \< 20 (if age \< 70 years) or \< 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age \< 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid * patient affiliated to social security system * patient gave written informed consent

inclusion criteria: * age above 18 years * laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 * date of first symptoms of sars-cov-2 infection \> 4 weeks and \< 4 months * persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 4 weeks after covid, defined as : * increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 4 weeks after covid and/or * asthenia score (pichot asthenia scale) \> 22 beyond the first 4 weeks after covid, if patient had no asthenia before covid (asthenia score \<8) and/or * weight loss \> 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 4 weeks after covid and/or * bmi (body mass index) \< 20 (if age \< 70 years) or \< 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age \< 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid * patient affiliated to social security system * patient gave written informed consent

inclusion criteria: - age above 18 years - laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 - date of first symptoms of sars-cov-2 infection > 4 weeks and < 4 months - persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 4 weeks after covid, defined as : - increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 4 weeks after covid and/or - asthenia score (pichot asthenia scale) > 22 beyond the first 4 weeks after covid, if patient had no asthenia before covid (asthenia score <8) and/or - weight loss > 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 4 weeks after covid and/or - bmi (body mass index) < 20 (if age < 70 years) or < 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age < 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid - patient affiliated to social security system - patient gave written informed consent

inclusion criteria: - age above 18 years - laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 - date of first symptoms of sars-cov-2 infection > 4 weeks and < 4 months - persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 4 weeks after covid, defined as : - increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 4 weeks after covid and/or - asthenia score (pichot asthenia scale) > 22 beyond the first 4 weeks after covid, if patient had no asthenia before covid (asthenia score <8) and/or - weight loss > 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 4 weeks after covid and/or - bmi (body mass index) < 20 (if age < 70 years) or < 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age < 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid - patient affiliated to social security system - patient gave written informed consent

inclusion criteria: - age above 18 years - laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 - date of first symptoms of sars-cov-2 infection > 6 weeks and < 4 months - persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 6 weeks after covid, defined as : - increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 6 weeks after covid and/or - asthenia score (pichot asthenia scale) > 22 beyond the first 6 weeks after covid, if patient had no asthenia before covid (asthenia score <8) and/or - weight loss > 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 6 weeks after covid and/or - bmi (body mass index) < 20 (if age < 70 years) or < 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age < 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid - place of residence located in llle-et-vilaine, côtes d'armor or morbihan - patient affiliated to social security system - patient gave written informed consent

inclusion criteria: - age above 18 years - laboratory (rt-pcr and/or serology) confirmed infection with sars-cov-2 - date of first symptoms of sars-cov-2 infection > 6 weeks and < 4 months - persisting functional and/or respiratory deficit and/or asthenia and/or malnutrition beyond the first 6 weeks after covid, defined as : - increase of mmrc (modified medical research council) score ≥ 1 between the month before covid and beyond the first 6 weeks after covid and/or - asthenia score (pichot asthenia scale) > 22 beyond the first 6 weeks after covid, if patient had no asthenia before covid (asthenia score <8) and/or - weight loss > 5% within 6 months, comparing minimum weight between the month before covid and beyond the first 6 weeks after covid and/or - bmi (body mass index) < 20 (if age < 70 years) or < 22 (if age ≥ 70 years) if bmi (body mass index) ≥ 20 (if age < 70 years) or ≥ 22 (if age ≥ 70 years) the month before covid - place of residence located in llle-et-vilaine, côtes d'armor or morbihan - patient affiliated to social security system - patient gave written informed consent