Background: pandemic Covid-19 isn't a simple health-care problem that will go away and never come back. One of the most common symptoms of Post-acute covid-19 is fatigue. Purpose of the study: To determine the prevalence of fatigue in adult people post mild and moderate covid-19 cases and the relation between fatigue post covid-19 and several factors. Material and methods: Eighty-one post covid-19 patients from both genders were recruited from registry records of preventive medicine and surveillance of Ministry of Health and Population in the city of El Minya / Egypt. The study was conducted from 15st September 2020 till 15st December 2020. Demographic data were collected (age, sex, BMI), smoking status, Data about status of covid-19 if they hospitalized or not hospitalized and received treatment. Fatigue post covid-19 was evaluated by using Modified Fatigue Impact Scale (MFIS) and Shortness of breath (dyspnea) by Numerical rating scale of dyspnea. Results: fatigue in adult patients post mild and moderate covid-19 cases after three to five months from their recovery was prevalent 64.2% using the MFIS. There was no significant association between fatigue and age, sex, BMI, smoking, hospitalization and received treatment. The association between NRS and MFIS was moderately positive and significant. (r = 0.39, p = 0.0001). Conclusion: fatigue was prevalent among adult patients post covid-19 with 64.2% using the MFIS. Continuous monitoring and timely intervention prevent long-term symptoms from being chronic.