Objective: Chonburi province is ranked fourth in Thailand in terms of COVID-19 cases. The objective was to compare neonatal and maternal outcomes among pregnant women with and without COVID-19 infection delivered in Chonburi hospital.

Materials and Methods: The present study was a retrospective matched cohort study that included all pregnant women who delivered between January 1 and August 31, 2021, at Chonburi Hospital, Thailand. The exposure group comprised women with a current or previous positive COVID-19 PCR test, while the comparators were the PCR negative group. The matching ratio was 1:4, based on gestational and maternal age, parity, and the closest delivery date. Clinical data were obtained from medical records.

Results: Forty-six pregnant women had a positive COVID-19 PCR, 24 (52.17%) were Thai and 22 (47.83%) were of other ethnicities. Most (60.87%) were asymptomatic or required no medical assistance. Three (6.52%) had severe pneumonia and required respiratory support. Neither maternal death nor vertical transmission was detected. Compared with 184 COVID-19-negative pregnant women, no significant differences in low APGAR score of less than 7, and preeclampsia in the 46 COVID-19-positive pregnant women were observed. However, COVID-19-positive pregnant women showed an increased rate of neonatal respiratory distress (RD) (relative risk [RR] 2.55; 95% confidence interval [CI] 1.04 to 6.21] and clinical early-onset neonatal sepsis (RR 3.60; 1.55 to 8.36). Additionally, a higher cesarean section rate was observed in the COVID-19 positive group (RR 1.45, 1.11 to 1.85).

Conclusion: There were no significant differences in neonates with APGAR of less than 7 between the cohort of 46 pregnant women who tested positive for COVID-19 and those who tested negative. However, a higher rate of cesarean delivery, presumed early-onset neonatal septicemia, and RD in the COVID-19 positive group were noted and should be monitored.

Keywords: COVID-19; Pregnancy; Neonatal outcome; Birth asphyxia

DOI: 10.35755/jmedassocthai.2022.08.13443

Received 15 December 2021 | Revised 29 May 2022 | Accepted 7 June 2022