Vertical Transmission of SARS-CoV-2: A Systematic Review

Vertical Transmission of SARS-CoV-2: A Systematic Review

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Abstract Objective The evaluation of the available evidence on vertical Hockey Protective - Elbow Pads - Senior transmission by severe acute respiratory syndrome coronavirus 2 (SARS-CoV)-2.Data Sources An electronic search was performed on June 13, 2020 on the Embase, PubMed and Scopus databases using the following search terms: (Coronavirus OR COVID-19 OR COVID19 OR SARS-CoV-2 OR SARS-CoV2 OR SARSCoV2) AND (vertical OR pregnancy OR fetal).Selection of Studies The electronic search resulted in a total of 2,073 records.

Titles and abstracts were reviewed by two authors (WPM, IDESB), who checked for duplicates using the pre-established criteria for screening (studies published in English without limitation regarding the date or the status of the publication).Data Collection Data extraction was performed in a standardized way, and the final eligibility was assessed by reading the full text of the articles.We retrieved data regarding the delivery of the potential cases of 2 Layers Wooden Plaque vertical transmission, as well as themain findings and conclusions of systematic reviews.

Data Synthesis The 2,073 records were reviewed; 1,000 duplicates and 896 clearly not eligible records were excluded.We evaluated the full text of 177 records, and identified only 9 suspected cases of possible vertical transmission.The only case with sufficient evidence of vertical transmission was reported in France.

Conclusion The risk of vertical transmission by SARS-CoV-2 is probably very low.Despite several thousands of affected pregnant women, we have identified only one case that has fulfilled sufficient criteria to be confirmed as a case of vertical transmission.Well-designed observational studies evaluating large samples are still necessary to determine the risk of vertical transmission depending on the gestational age at infection.