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. 2021 Jul 6;11:13898. doi: 10.1038/s41598-021-92357-y

Table 2.

Description of the population (COVID-19 history).

COVID-19 history Pregnant women with a confirmed SARS-CoV-2 infection
(n = 926)
Timing of exposure—no (%)
 < 20 WG 89 (9.6)
 Median GA at exposure WG (IQR) 12 (9–16)
 > 20 WG 826 (89.2)
 Median GA at exposure WG (IQR) 38 (34–40)
Unknown 11 (1.2)
Clinical manifestation—no (%)
Asymptomatic 295 (31.9)
Fever 300 (32.4)
Cough 374 (40.4)
Dyspnea 146 (15.8)
Sore throat 83 (9.0)
Myalgia 148 (16.0)
Fatigue 191 (20.6)
Headache 121 (13.1)
Nausea/vomiting 48 (5.2)
Anosmia/ageusia 165 (17.8)
Other 81 (8.8)
Maternal outcomes—no (%)
No adverse outcomes 828 (89.4)
Mild adverse outcomes 6 (0.6)
Severe adverse outcomes 92 (9.9)
 Maternal deaths 6 (0.6)
 Admission to ICU 37 (4.0)
 Advanced oxygen support 68 (7.3)

First trimester was defined from 1 to 13 6/7 weeks’ gestation (WG), second trimester from 14 0/7 to 27 6/7 WG and third trimester from 28 WG. For symptomatic patients, trimester of exposure was defined as the gestational age (GA) at onset of symptoms. For asymptomatic patients, the trimester of exposure was defined as the GA at SARS-CoV-2 testing.

For symptomatic patients, the trimester of exposure was defined as the gestational age (GA) at onset of symptoms. For asymptomatic patients, the trimester of exposure was defined as the GA at SARS-CoV-2 testing.

IQR, interquartile range; ICU, Intensive Care Unit; WG, weeks’ gestation.