| Groff (Oct 13, 2021) | Dec 2019 to Mar 2021 | 57/250,351 | Fatigue or weakness 37.5% (IQR, 25.4% to 54.5%) |
| Lopez-Leon (Aug 09, 2021) | Dec 2019 to Jan 2021 | 15/47,910 | Fatigue 58% (42% to 73%) |
| Misra (Dec 07, 2021) | Dec 2019 to Dec 2020 | 350/145,721 | Fatigue 32%Myalgia 20%Myalgia or fatigue 25 to 37% |
| Rogers (Jun 3, 2021) | Dec 2019 to Jul 2020 | 147/99,905 | Fatigue 37.8% (31.6% to 44.4%)Weakness 40.0% (27.9% to 53.5%)Myalgia 25.1% (19.8% to 31.3%) |
| Mirmoeeni (Apr 24, 2021) | Dec 2019 to Apr 2020 | 16/4,754 | Fatigue 39.27% (30.92% to 47.61%) |
| Li (Aug 13, 2020) | Ja 2020 to Apr 2020 | 212/281,461 | Fever 78.8% (76.2% to 81.3%)Malaise 37.9% (29.5% to 47.1%) |
| Ahmed (May 08, 2020) | Dec 2019 to Mar 2020 | 13/24,677 | Fever 71% (China vs. others 85% vs 53%, p < 0.001) |
| Kumar (Apr 21, 2020) | Jan 2020 to Mar 2020 | 58/6,892 | Fever 83.4% Fatigue 33.8%Association of high fever (>39 °C) and severity: OR 1.59 (1.10 to 2.30) |
| Manabe (Jun 28, 2020) | Dec 2019 to Feb 2020 | 13/2,397 | Fever 82.46% (69.62% to 95.30%)Fatigue 41.11% (25.08% to 57.13%)Myalgia 20.10% (12.08% to 28.11%) |
| Zhu (Apr 13, 2020) | Jan 2020 to Feb 2020 | 38/3,062 | Fever 80.4% (73.0% to 86.9%)Fatigue 46.0% (38.2% to 54.0%)Myalgia 33% (26.0% to 40.5%) |
| Yang (Mar 12, 2020) | Dec 2019 to Feb 2020 | 7/1,576 | Fever 91.3% (86% to 97%)Fatigue 51.0% (34% to 68%) |