Table 1. Clinical characteristics of the mothers with influenza or SARS-CoV-2 and their infants.
| Clinical characteristics | Chen 2020 (2) | Zhang 2020 (16) | Lei 2020 (17) | Dong 2020 (18) | Wang 2020 (19) | Cantey 2013 (20) | |
|---|---|---|---|---|---|---|---|
| Period of observation | 2020 | 2020 | 2020 | 2020 | 2020 | 2003 to 2005 | 2009 to 2010 |
| Study site | Wuhan, China | Haikou, China | Wuhan, China | Wuhan, China | Wuhan, China | Dallas, USA | |
| Mothers | |||||||
| Number of mothers | 9 | 1 | 4 | 1 | 1 | 23 | 19 |
| Median age(years) | 30 | – | 32 | 29 | 34 | 26 | 26 |
| Type of infection | |||||||
| Influenza | 1 | 0 | 0 | 0 | 0 | 23 | 19 |
| SARS-CoV-2 | 9 | 1 | 4 | 1 | 1 | 0 | 0 |
| Mode of delivery | |||||||
| Vaginal | 0 | 1 | 1 | 0 | 0 | 14 | 14 |
| Cesarean section | 9 | 0 | 3 | 1 | 1 | 9 | 5 |
| Infants | |||||||
| Number of infants | 9 | 1 | 4 | 1 | 1 | 23 | 19 |
| Girl | – | 1 | – | 1 | 0 | 9 | 10 |
| Boy | – | 0 | – | 0 | 1 | 14 | 9 |
| Median birth weight (g) | 2,789 | – | 2,803 | 3,120 | 3,205 | 3,123 | 3,333 |
| Median gestational age (weeks) | 37 | – | 36 | 38 | 40 | 38 | 40 |
| Age | Neonate | 3 months 19 days | Neonate | Neonate | Neonate | Neonate | Neonate |
| Median APGAR score | |||||||
| 1 min | 9 | – | 9 | 9 | 8 | 8 | 9 |
| 5 min | 10 | – | 10 | 10 | 9 | 9 | 9 |
| Breast milk RT-PCR | |||||||
| Positive | 0 | 0 | 0 | 0 | 0 | – | - |
| Negative | 6 | 1 | 4 | 1 | 1 | – | - |
| Breastfeeding | |||||||
| Wearing a surgical mask | – | 0 | – | – | – | 0 | 19 |
| Hygiene measure before close contact with infant | – | 0 | – | – | – | 23 | 19 |
| Signs of infection | 0 | 1 | 0 | 0 | 0 | 0 | 0* |
| Throat swab RT-PCR | |||||||
| Positive | 0 | 1 | 0 | 0 | 0 | – | 0 |
| Negative | 6 | 0 | 4 | 1 | 1 | – | 1# |
–, not reported; *, two infants lost to follow-up; #, one infant with fever (source not identified); influenza rapid test and polymerase chain reaction test negative.