Table 1.
Maternal characteristics and clinical presentations
| Case | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Proportion (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maternal characteristics | |||||||||||||
| Age (yrs) | 26 | 36 | 30 | 24 | 24 | 24 | 31 | 18 | 32 | 32 | 22 | 31 | NA |
| Gravidity | 1 | 5 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 3 | 1 | 2 | NA |
| Parity | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 2 | 0 | 0 | NA |
| GA (weeks) | 18 | 21+ 4 | 22+ 5 | 25 | 29 | 31+ 3 | 32+ 3 | 34 | 34+ 4 | 36 | 36+ 4 | 38+ 6 | NA |
| Anemia | – | – | + | + | + | + | – | – | – | + | + | – | 6/12(50) |
| Symptoms | |||||||||||||
| Fever | + | + | + | + | + | + | + | + | + | + | + | + | 12/12(100) |
| Dyspnea | + | + | + | + | + | + | + | + | + | + | + | + | 12/12(100) |
| Cough | – | – | + | + | + | + | + | + | – | + | – | + | 8/12(67) |
| Malaise | – | – | + | + | – | – | – | – | – | – | + | – | 3/12(25) |
| Headache | – | + | – | – | – | – | – | – | – | – | + | – | 2/12(17) |
| Investigations | |||||||||||||
| CXR/CT evidence | + | + | + | + | + | + | + | + | + | + | + | + | 12/12(100) |
| Leukocytosis | + | – | – | + | – | + | + | + | + | – | + | – | 7/12(58) |
| PaO2/FIO2 | 212 | 200 | 191 | 141 | 207 | 190 | 148 | 73 | 156 | 209 | 133 | 220 | NA |
| Fever to diagnosis (d) | 8 | 7 | 68 | 7 | 23 | 5 | 4 | 7 | 10 | 4 | 6 | 4 | NA |
| Pathogen | – | H7N9 | TB | – | TB | – | – | – | – | – | H1N1 | RSV | NA |
NA not applicable, GA gestational age, CXR chest X-ray, CT computed tomography, TB tuberculosis, RSV respiratory syncytial virus