Perinatal outcomes among infants of women admitted with SARS-CoV-2 infection during the period when omicron was the dominant variant and who have given birth (n=2821) by symptom group and vaccination status in the UK during 15 December 2021 to 14 March 2022. Data are n (%)
| Vaccination status | With symptoms | Without symptoms | ||||||||||
| Total (n=559) | Unvaccinated(n= 291) | One dose (n= 70) | Two doses (n=101) | Three doses (n=27) | Unknown (n=70) | Total (n=2 262) | Unvaccinated (n=1182) | One dose (n=193) | Two doses (n=384) | Three doses (n=122) | Unknown (n=381) | |
| Stillbirth | 10 (1.8) | 5 (1.7) | 1 (1.4) | 3 (3.0) | 0 | 1 (1.4) | 9 (0.4) | 5 (0.4) | 2 (1.0) | 2 (0.5) | 0 | 0 |
| Admission to neonatal unit* | 71 (13.0) | 31 (10.9) | 8 (11.8) | 17 (17.4) | 3 (11.1) | 12 (17.7) | 209 (9.2) | 109 (9.2) | 17 (8.8) | 38 (9.9) | 9 (7.4) | 36 (9.4) |
| Neonatal death | 1 (0.2) | 0 | 1 (1.4) | 0 | 0 | 0 | 9 (0.4) | 4 (0.3) | 1 (0.5) | 2 (0.5) | 0 | 2 (0.5) |
*Eight infants (four each for mothers with and without symptoms) had missing data for admission to neonatal unit.