​The sequelae of the new coronavirus infection were reported individually by the media, but the reality was not well understood. However, the results of a long-term epidemiology and questionnaire survey at the National Center for Global Health and Medicine have gradually revealed the actual situation as follows.

① Acute symptoms: fever, headache, loss of appetite, arthralgia, sore throat, myalgia, diarrhea, sputum

(2) Symptoms that persist from the acute phase: malaise, dysgeusia, olfactory dysfunction, cough, dyspnea

③ Symptoms that appear after recovery: hair loss, poor concentration, impaired memory, depression

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​ At the time of onset or 6 months after diagnosis, 337 (73.7%) were asymptomatic, and 120 (26.3%) had some symptoms. In addition, 417 patients (91.2%) were asymptomatic at the time of onset or 12 months after diagnosis, and 40 patients (8.8%) had some symptoms.

It was found that women are more likely to develop fatigue, taste / smell disorders, and hair loss than men, and that taste disorders are more likely to persist. It was also found that younger people and thinner people are more likely to have taste and smell disorders. There was no clear correlation between the presence or absence of acute treatments such as antivirals and steroids and the appearance of protracted symptoms.

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Target: Out of 526 subjects, 457 responded (recovery rate 86.9%). The median age of the respondents was 47 years, 231 (50.5%) were female, 212 (46.4%) had some underlying disorder, and 448, excluding 9 missing values, had a severity of severity. There were 378 mild cases (84.4%), 57 moderate cases (12.7%), and 13 severe cases (2.9%).