Inclusion Criteria:  • Persons had a COVID-19 or suspected COVID-19 infection (still suffering or suffered symptoms) for longer than 1 week Even if your COVID-19 test result was negative, or you were not tested at all  Persons who are 18 years of age or older  General considerations according to Myalgic encephalomyelitis: International Consensus Criteria:  Patients should meet the full criteria for epidemiological studies. If specific subgroups or atypical ME are included in a research study, that should be clearly indicated. Specificity: Because critical symptoms are compulsory, it ensures the proper selection of patients. Key operational guidelines enhance clarity and specificity. Ranking the hierarchy of the most troublesome symptoms may be helpful in some studies. Reliability: Symptoms must not be viewed as a nominal checklist. The International Consensus Criteria focus on symptom patterns, which increase reliability. The International Symptom Scale ensures consistency in the way questions are asked and further increases the reliability of data collected in different locations. Patients should complete the International Symptom Scale prior to entering a research study.  Exclusion Criteria:  persons other than selected in the inclusion criteria