As of week 6 of 2022, testing for COVID-19 is no longer offered to the general public. The Swedish Public Health Agency recommends to focus testing for patients, care users and health and elderly care staff with symptoms of COVID-19. From January 2022, one laboratory in Sweden has experienced problems in reporting to the national notification system for notifiable communicable diseases. From week 23 up to week 39, cases from January and onwards were reported retrospectively. In week 39, the remaining 9,496 cases tested in January and early February was reported. The post-registration is thus completed.