Long COVID, Population Surveillance, Primary Health Care, Clinical Coding, Matched-Pair Analysis
COVID-19, SARS-CoV-2, igg, antibody, antibodies, vaccine, vaccination, vaccinated, serology, serum, diabetes, ckd, cancer, immune, immunology, impaired, insufficient, insufficient-response, impaired-response, non-responders, risks, QCOVID, clinical-risks, multimorbidity, comorbidity