Previous studies suggest lower rates of preterm birth during the COVID-19 pandemic. In a setting with low disease rates and strict restrictions, we followed women from conception and found a significant reduction in preterm birth that was driven by lower rates of spontaneous prematurity and stronger in women with a previous preterm birth. What are the clinical implications of this work?Women exposed to strict restrictions to mitigate the coronavirus pandemic had lower preterm birth rates than women who were not exposed. Such reduction is more substantial in women with a previous preterm birth, who are likely to benefit from any potential interventions resulting from this observation.

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