| | Case | Study (country) | Maternal age (years), gravida, para, gestational age (weeks) | Comorbidities | Presenting symptoms | Mode of delivery | Duration from admission to death | Polymerase chain reaction testing of the neonate | | Advanced maternal age | Obesity | Diabetes | Asthma | Cardiovascular | Other |
| | 1 | Ahmed, I. (United Kingdom) | 29, G2P1, 29 | No | Yes | Yes | Yes | No | Renal disease, vitamin D deficiency | Fever | Cesarean | 15 days from the first admission, 7 days from the second admission | Negative | | 2 | Karamim, P. (Iran) | 27, G2P1, 30 | No | No | No | No | No | No | Fever, cough, myalgia | Vaginal delivery | 3 days | N/A (stillbirth) | | 3 | Shojaei, S. (Iran) | 38, G2, Ab1, 23 (twin) | Yes | No | No | No | No | No | Fever, cough, dyspnea | Vaginal delivery | 17 days | N/A (death of both fetuses) | | 4 | Vallejo, V. (United States) | 36, G5P3Ab1, 37 | Yes | Yes | No | No | No | No | Fever, cough, sore throat | Cesarean | 2 days | Negative | | 5 | Zamaniyan, M. (United States) | 22, not reported, 32 w | No | No | No | No | No | Hypothyroidism | Fever, cough, dyspnea, myalgia, anorexia, nausea | Cesarean | 19 days | First negative, second test positive 24 hours later | | 6 | Hantoushzadeh, S. (Iran) | 25-29a, G2P1, 30 | No | No | No | No | No | No | Fever, cough, dyspnea, myalgia | Vaginal delivery | 4 days | N/A (fetal death) | | 7 | 25-29a, G1P0, 38 | No | Yes | No | No | No | No | Fever, cough, dyspnea, myalgia | Cesarean | 5 days | Negative | | 8 | 40-44a, G2P1, 30 | Yes | No | No | No | No | Hypothyroidism | Fever, cough | Cesarean | 6 days | Negative on day of life 1, positive on day of life 7 | | 9 | 30-34a, G3P0, 24 | No | No | No | No | No | No | Fever, cough, dyspnea, myalgia | Undelivered | 8 days | N/A (fetal death) | | 10 | 30-34a, G2P1, 36 | No | No | Yes | No | No | No | Fever, cough | Cesarean | 10 days | Negative | | 11 | 35-39a, G2P0, 24 | Yes | No | No | No | No | No | Fever, cough, dyspnea, myalgia | Undelivered | 22 days | N/A (fetal death) | | 12 | 45-49a, G2P1, 28 | Yes | No | No | No | No | Underweight | Fever, cough, dyspnea | Cesarean | 18 days | Negative | | 13 to 136 | Takemoto, M.L.S. (Brazil)b | 31.5 (mean), no data about gravida or gestational age was available | Not reported | 13c | 22d | 5e | 13f | Not reported | Not reported | Not reported | Not reported | Not reported |
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