Study has been terminated and replaced due to low enrollment.

The main goal of this study is to evaluate the outcomes of pregnancy in females exposed to the Moderna COVID-19 vaccine (mRNA-1273) during pregnancy.

The Moderna COVID-19 Vaccine Pregnancy Registry will collect and analyze information on the potential impact of exposure to the Moderna COVID-19 vaccine on pregnancy and birth outcomes.

Inclusion Criteria:

• Currently pregnant
• The outcome of pregnancy (that is, pregnancy loss or live birth) must not be known at entry.
• Agrees to electronically sign the release of medical information form permitting the study to contact her HCPs (for example, primary care provider [PCP], obstetrician, nurse midwife) and the infant's HCP (for example, pediatrician) for medical information.
• Received the Moderna COVID-19 vaccine at any point from 28 days prior to last menstrual period (LMP) throughout pregnancy.

Exclusion Criteria:

• Participant has received any other COVID-19 vaccines at any point from 28 days prior to LMP throughout pregnancy.
• Women currently participating in another investigational device or drug study, currently taking an investigational medicinal product, or having taken an investigational product within 28 days prior to LMP or during pregnancy.

Women who have been exposed the Moderna COVID-19 vaccine during the 28 days prior to their LMP or at any time during pregnancy are eligible for this exposed cohort.