Vertical transmission of SARS-CoV2 during pregnancy: A high-risk cohort.
Prenat Diagn
; 41(8): 998-1008, 2021 07.
Article
in En
| MEDLINE
| ID: mdl-34101871
ABSTRACT
OBJECTIVE:
Identify the potential for and risk factors of SARS-CoV-2 vertical transmission.METHODS:
Symptomatic pregnant women with COVID-19 diagnosis in whom PCR for SARS-CoV-2 was performed at delivery using maternal serum and at least one of the biological samples cord blood (CB), amniotic fluid (AF), colostrum and/or oropharyngeal swab (OPS) of the neonate. The association of parameters with maternal, AF and/or CB positivity and the influence of SARS-CoV-2 positivity in AF and/or CB on neonatal outcomes were investigated.RESULTS:
Overall 73.4% (80/109) were admitted in hospital due to COVID-19, 22.9% needed intensive care and there were four maternal deaths. Positive RT-PCR for SARS-CoV-2 was observed in 14.7% of maternal blood, 13.9% of AF, 6.7% of CB, 2.1% of colostrum and 3.7% of OPS samples. The interval between COVID-19 symptoms and delivery was inversely associated with SARS-CoV-2 positivity in the maternal blood (p = 0.002) and in the AF and/or CB (p = 0.049). Maternal viremia was associated with positivity for SARS-CoV-2 in AF and/or CB (p = 0.001). SARS-CoV-2 positivity in the compartments was not associated with neonatal outcomes.CONCLUSION:
Vertical transmission is possible in pregnant women with COVID-19 and a shorter interval between maternal symptoms and delivery is an influencing factor.
Full text:
1
Database:
MEDLINE
Main subject:
Pregnancy Complications, Infectious
/
Infectious Disease Transmission, Vertical
/
SARS-CoV-2
/
COVID-19
Type of study:
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Prenat Diagn
Year:
2021
Type:
Article
Affiliation country:
Brazil