Guidelines for pregnant women with suspected SARS-CoV-2 infection.

Coronaviruses responsible for severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) can cause severe adverse pregnancy outcomes, such as miscarriage, premature delivery, intrauterine growth restriction, and maternal death.1, 2 Vertical transmission of the virus responsible for 2019 novel coronavirus disease (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has not yet been detected, whereas perinatal transmission has been suspected in one case.

Consequences of infection with SARS-CoV-2 for pregnancies are uncertain, with no evidence so far of severe outcomes for mothers and infants; however, the possibility should be considered. The recent experience with Zika virus suggests that when a new pathogen emerges, the health-care community should be prepared for the worst-case scenario. Therefore, recommendations for management of pregnant women at risk of SARS-CoV-2 infection are urgently needed. To this end, we propose a detailed management algorithm for health-care providers (appendix).

In the algorithm, we suggest that any pregnant woman who has travelled in a country affected by SARS-CoV-2 within the previous 14 days or who has had close contact with a patient with confirmed SARS-CoV-2 infection should be tested with a SARS-CoV-2 nucleic acid amplification test, even if asymptomatic. Pregnant women with laboratory-confirmed SARS-CoV-2 infection who are asymptomatic should be self-monitored at home for clinical features of COVID-19 for at least 14 days. These patients and those recovering from mild illness should be monitored with bimonthly fetal growth ultrasounds and Doppler assessments because of the potential risk for intrauterine growth restriction. Pregnant women with COVID-19 pneumonia should be managed by a multidisciplinary team at a tertiary care centre. When quick Sepsis-related Organ Failure Assessment criteria are met, the patient should be transferred to an intensive care unit.

For pregnant women with confirmed infection, the choice of delivery timing should be individualised depending on the week of gestation and maternal, fetal, and delivery conditions. Whenever possible, vaginal delivery via induction of labour, with eventual instrumental delivery to avoid maternal exhaustion, should be favoured to avoid unnecessary surgical complications in an already sick patient. Septic shock, acute organ failure, or fetal distress should prompt emergency cesarean delivery (or termination if legal before fetal viability).

Newborns of mothers positive for SARS-CoV-2 should be isolated for at least 14 days or until viral shedding clears, during which time direct breastfeeding is not recommended.

These recommendations should be adapted to local health-care facilities, as well as in response to any further updates on SARS-CoV-2 and COVID-19.